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a study of hot shortness in steels

  • Description:A study of hot shortness in steelsof ductility to a hot short steel at very high temperatures. He claimed that hot shortness could be circumvented by heating to a higher temperature and that manganese counter­ acted hot shortness at all temperatures and from all causes. The fact that hot shortness was limited to a certain temperature range was d ...
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a study of hot shortness in steels Description

HOT SHORTNESS IN STEELS AND A NOVEL APRROACH

The effect of Cu to steel is known as hot shortness [4]. Hot shortness is surface cracks on the steel due to segregated and liquefied Cu on the surface [6]. Ele-ments of Ni and Si alloying in to the steel is found to be reducing the hot shortness vulnerability of the steel [9], [15]. Oxidation of Cu containing steel causes Cu segre- What causes hot shortness?What causes hot shortness?Hot shortness is caused by a low-melting constituent, often present only in minute amounts, that is segregated at grain boundaries. The presence of iron sulfide causes problems in hot working, and this phenomenon is called hot shortness. Hot shortness is reduced by the addition of manganese, which combines with the sulfur to form manganese sulfide.What is a Hot Shortness? - Definition from Corrosionpedia

What is hot and cold?What is hot and cold?Hot tearing (or hot shortness) arises when the tensile stresses generated within a solidifying casting exceed the fracture stress of the partially solidified metal. The result is usually evident as surface tearing and cracking which tend to occur at the sites of local hot spots where the casting is physically restrained.Hot Shortness - an overview ScienceDirect Topics What is the best filler for hot shortness?What is the best filler for hot shortness?Use appropriate filler material Filler material with manganese can help reduce the occurrence of hot shortness. The manganese combines with sulfur impurities to form manganese sulfide. This compound has a significantly higher melting point than iron sulfide, and therefore is more resistant to cracking during solidification.What is a Hot Shortness? - Definition from Corrosionpedia(PDF) Assessment of the susceptibility to "hot shortness a study of hot shortness in steels

Abstract An investigation into the influence of low copper contents on the hot ductility of C-Mn-Al steels has been carried out in order better the understanding on the problem of hot shortness.

(PDF) Assessment of the susceptibility to "hot shortness a study of hot shortness in steels

At hot-working temperatures, iron is oxidized preferentially at the external surface and liquid copper forms on austenite grain boundaries, causing cracking (or "hot shortness") in the steel a study of hot shortness in steels.A study of hot shortness in steels - CORE ReaderA study of hot shortness in steels - CORE ReaderA study of hot shortness in steelsof ductility to a hot short steel at very high temperatures. He claimed that hot shortness could be circumvented by heating to a higher temperature and that manganese counter­ acted hot shortness at all temperatures and from all causes. The fact that hot shortness was limited to a certain temperature range was difficult to explain.

A study of the processes during high temperature oxidation a study of hot shortness in steels

Copper is a problematic residual element in electric arc furnace steel production because it leads to "surface hot shortness," a cracking defect that occurs during hot rolling of steel. The cracking arises from a liquid, copper-rich phase that penetrates into and embrittles the austenite grain boundaries. The liquid forms because copper is nobler than iron and enriches at the oxide/metal a study of hot shortness in steelsA study of the processes during high temperature oxidation a study of hot shortness in steelsCopper is a problematic residual element in electric arc furnace steel production because it leads to "surface hot shortness," a cracking defect that occurs during hot rolling of steel. The cracking arises from a liquid, copper-rich phase that penetrates into and embrittles the austenite grain boundaries. The liquid forms because copper is nobler than iron and enriches at the oxide/metal a study of hot shortness in steelsAuthor S. Yeiltepe, M. K. eenPublish Year 2021A study of hot shortness in steels - CORE ReaderA study of hot shortness in steels - CORE Reader

Casting Defects Hot Tearing : Total Materia Article

Places where hot-tearing cast defects type occur most frequently are shown at Figure 1. Figure 1 Defects -Hot Tears. The deformation behavior of the mush is very critical for the formation of hot tears. The link between the appearance of hot tears and the mechanical properties in the semisolid state is obvious and has been explored for decades.Casting Defects Hot Tearing : Total Materia ArticlePlaces where hot-tearing cast defects type occur most frequently are shown at Figure 1. Figure 1 Defects -Hot Tears. The deformation behavior of the mush is very critical for the formation of hot tears. The link between the appearance of hot tears and the mechanical properties in the semisolid state is obvious and has been explored for decades.Cited by 1Publish Year 1965Author Koang-Hwa Kung"A study of hot shortness in steels" by Koang-Hwa KungOct 03, 2014Abstract. "In this investigation an attempt was made to study the deformation of a number of laboratory-melted and commercial steels. A compressive load was applied to the steels at constant temperature and also during heating. The amounts and rates of deformation in these two types of tests was not consistent in the constant temperature tests the hot short steels deformed more than the

Cited by 1Publish Year 1965Author Koang-Hwa KungPeople also askWhat is the hot shortness of steel?What is the hot shortness of steel?Steel containing sulfur at about 0.02% or higher experiences hot shortness. This stems from the formation of a liquid FeS phase along the grain boundaries. Manganese addition to a Mn/S ratio of higher than 20:1 transforms iron sulfide to manganese sulfide and corrects the problem of hot shortness.Hot Shortness - an overview ScienceDirect TopicsCopper in Steels IspatGuru

Sep 14, 2014In severe cases, the steel has hot shortness and is unworkable. Three solutions available to this well known problem are namely (i) preheating of steel in protective or non oxidizing atmosphere, (ii) carrying out the hot work only below 1090 deg C which is the melting point of the Cu rich phase, and (iii) addition of nickel (Ni) or cobalt (Co a study of hot shortness in steelsEFFECT OF TRACE AND RESIDUAL ELEMENTS ON THE hot shortness and hot brittleness of the steels. For this reason, the proper selection of the scrap is of great importance. The problems with the hot brittleness of steel were intensively investigated in previous years. Numerous studies and investigations have been performed since the early 1900s, when steels propensity for hot cracking

Effect of Oxygen Concentration on Surface Hot Shortness

The most serious problem in the recycling of steel is the occurrence of surface hot shortness during hot deformation due to the mixing of Cu from scrap into steels. Tin accelerates the effect of Cu.Effect of Oxygen Concentration on Surface Hot Shortness of a study of hot shortness in steelsThis study examined the Cu distribution behavior during the oxidation of steel containing Cu and a method of suppressing surface hot shortness. The following conclusions were drawn (1) Cu is not only enriched at the scale/steel interface but is also migrated through scale. The Cu is moved in a Fe 3 O 4 layer in a relatively high O 2 concentration.Effect of Oxygen Concentration on Surface Hot Shortness of a study of hot shortness in steelsThis study examined the Cu distribution behavior during the oxidation of steel containing Cu and a method of suppressing surface hot shortness. The following conclusions were drawn (1) Cu is not only enriched at the scale/steel interface but is also migrated through scale. The Cu is moved in a Fe 3 O 4 layer in a relatively high O 2 concentration.

HIGH-TEMPERATURE CHARACTERISTICS OF

useful as a guide for hot-working operations. Figure 1 illustrates a broad concept of the strength ranges being considered. As shown, the stainless steels have a higher hot strength than low-carbon unalloyed steel, with the austenitic (300 Series) grades displaying considerably higher strengths than the martensitic or ferritic (400 Series) grades.HOT SHORTNESS IN STEELS AND A NOVEL APRROACHThe effect of Cu to steel is known as hot shortness [4]. Hot shortness is surface cracks on the steel due to segregated and liquefied Cu on the surface [6]. Ele-ments of Ni and Si alloying in to the steel is found to be reducing the hot shortness vulnerability of the steel [9], [15]. Oxidation of Cu containing steel causes Cu segre-Heat Treatment of Steels - K Street StudioThe heat treatment behavior of several plain carbon steels and low alloy steels is investigated. In this study the effect of quenching and tempering, iso-thermal annealing and continuous cooling a study of hot shortness in steels can lead to "hot shortness" during hot forming so small amounts of manganese is often added to

History of Steels Flashcards Quizlet

Hot shortness was solved by first reducing the carbon content to almost nothing, which purified the steel, and then by adding Mn (spiegelsen, a C-Mn alloy) to re-introduce the C, which strengthened the steels. Mn adds ductility to carbon-based steels and is used extensively today.Hot Shortness - an overview ScienceDirect TopicsSteel containing sulfur at about 0.02% or higher experiences hot shortness. This stems from the formation of a liquid FeS phase along the grain boundaries. Manganese addition to a Mn/S ratio of higher than 20:1 transforms iron sulfide to manganese sulfide and corrects the problem of hot shortness. Manganese enhances the mechanical properties of steel.Hot ductility study on high P and Cu containing low shortness in the bulk of the steel and (ii) surface hot shortness. Liquation cracking is a problem associated with enriched liquid phase at grain boundaries, which occurs when relatively insoluble residual elements (e.g. sulphur) are present in steel resulting in cracking. Surface hot shortness, on

Influence of Cu Contents in Hot Shortness of Cu Bearing a study of hot shortness in steels

The surface cracking behaviors of Cu-bearing steels were studied under similar conditions of the direct hot charging processes. Several specimens with various Cu contents from 0.11 to 0.38% were prepared, the oxidation tests were performed at the temperature of 1100, 1150 and 1200°C, and the hot compression tests were conducted at 1050°C using the Gleeble 3500 in order to examine the Cu a study of hot shortness in steelsMechanism of hot-shortness in leaded and tellurized free a study of hot shortness in steelsResults of limited hot-rolling experiments to study the incidence of surface cracking as a function of temperature support the above suggestion. This investigation was aimed at understanding the mechanism of hot-shortness in AISI 12L14 + Te steels, which might lead to a hot-rolling practice to minimize the high yield losses in this grade.Mechanism of hot-shortness in leaded and tellurized free a study of hot shortness in steelsThis investigation was aimed at understanding the mechanism of hot-shortness in AISI 12L14 + Te steels, which might lead to a hot-rolling practice to minimize the high yield losses in this grade. High temperature tensile tests showed a pronounced loss in ductility between 810 and 1150 °C, the embrittlement being most severe at about 980 °C.

Mechanism of hot-shortness in leaded and tellurized free a study of hot shortness in steels

This investigation was aimed at understanding the mechanism of hot-shortness in AISI 12L14 + Te steels, which might lead to a hot-rolling practice to minimize the high yield losses in this grade. High temperature tensile tests showed a pronounced loss in ductility between 810 and 1150 °C, the embrittlement being most severe at about 980 °C.NIOSHTIC-2 Publications Search - 10008939 - Reducing a study of hot shortness in steelsA study was conducted to determine if commonly used alloying additions or coating materials can prevent the formation of a liquid- copper phase during the reheating of copper-containing steels. If so, the tendency of such steels to surface crack during hot working might be eliminated. Steel specimens were scaled by heating them either isothermally or in a programed manner that simulated industriSuppression of Surface Hot Shortness due to Cu in TG, SEMEDS and XRD were used to study hot shortness behavior of steel containing ~0.3 mass% Cu, ~0.04 mass% Sn and with varying Si-content. It was found that Fe2SiO4 formation at the oxide a study of hot shortness in steels

Suppression of Surface Hot Shortness due to Cu in

the loss of steels by oxidation increases. A large grain size accelerates the surface hot shortness. A small amount of H2O in air signicantly accelerates the surface hot shortness. Effects of H2O in heating atmosphere depend on the steel composition and more detailed research on this is desired.Surface Hot-Shortness of Steels Induced by a Small The recycling of scrap steels can be difficult due to the tramp elements that they can contain. During the steelmaking process, tramp elements such as Cu and Sn are difficult to be removed; and it is these elements that cause surface cracking of steels during hot rolling process (i.e. Cu and Sn liquid embrittlement).The paper consists of three different experiments into the suppression of a study of hot shortness in steelsSurface Hot-Shortness of Steels Induced by a Small Amount a study of hot shortness in steelsDuring the steelmaking process, tramp elements such as Cu and Sn are difficult to be removed; and it is these elements that cause surface cracking of steels during hot rolling process (i.e. Cu and Sn liquid embrittlement).The paper consists of three different experiments into the suppression of surface cracking during the hot rolling process.

Surface hot-shortness of 1045 forging steel with residual a study of hot shortness in steels

Hot-shortness is brittleness in metals during high temperature deformation. In this study, surface hot-shortness of 1045 steels with residual copper was investigated. Eight 1045 steels with differing copper contents, from 0.09 to 0.39% (by weight), were tested.The Importance of MnS Inclusions on Hot Shortness of Cu a study of hot shortness in steelsJun 12, 2017A novel approach on the problem of hot cracks in Cucontaining steels is proposed to prevent the hot shortness. Cucontaining steels have been hot tensile tested to failure in argon or vacuum at different cooling rates and temperatures, followed by Scanning Electron Microscopy.The Importance of MnS Inclusions on Hot Shortness of Cu a study of hot shortness in steelsJun 12, 2017A novel approach on the problem of hot cracks in Cucontaining steels is proposed to prevent the hot shortness. Cucontaining steels have been hot tensile tested to failure in argon or vacuum at different cooling rates and temperatures, followed by Scanning Electron Microscopy.

What is hot shortness in steel? - Answers

Sulfur in steel is considered injurious except when added to enhance machinability. Sulfur readilly combines with iron to form a low melting iron sulphide. Sulfur causes hot shortness in steel a study of hot shortness in steels

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