High Temperature Deformation Behavior of Peritectic Carbon Steel during Solidification.

Mizukami, Hideo; Yamanaka, Akihiro; Watanabe, Tadao

doi:10.2355/isijinternational.42.964

Cited by 25 publications

(31 citation statements)

References 28 publications

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“…The measurement results of tensile strength of carbon steels 13,15) and alloy steels 12,14) during solidification is shown in Fig. 8.…”

Section: Tensile Strength and Density During Solidificationmentioning

confidence: 99%

“…In order to examine the solidification mode of tensile strength, carbon content of samples was varied. [12][13][14][15][16] …”

Section: Measurement Of Tensile Strength During Solidifi-mentioning

confidence: 99%

“…Moreover, as the strength of solidified shell at high temperature in the continuous casting mold is weak, it is necessary to evaluate high temperature physical properties in which the behavior of phase transformation is reflected. Then, the authors measured the tensile strength [12][13][14][15][16] and the density [17][18][19] during solidification which represent the high temperature physical properties, and examined the relationship between measured values and carbon contents.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of middle carbon steel, the range of this fraction of solid could be estimated by about 0.12. 15) When the deformation of solidified shell assumes to depend on the rate of change both strength and density in this range, Fig. 18 is obtained.…”

mentioning

confidence: 99%

“…In order to examine the dependency of the rate of change of strength and density as well as the case of ultra low and low carbon steel shown in Fig. 16, it is necessary to evaluate the range of fraction of solid 15,24,25) where the peritectic reaction occurs. In the case of middle carbon steel, the range of this fraction of solid could be estimated by about 0.12.…”

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Generation Mechanism of Unevenness of Ultra Low Carbon Steel at Initial Stage of Solidification

Mizukami

Yamanaka

2010

ISIJ International

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“…The measurement results of tensile strength of carbon steels 13,15) and alloy steels 12,14) during solidification is shown in Fig. 8.…”

Section: Tensile Strength and Density During Solidificationmentioning

confidence: 99%

“…In order to examine the solidification mode of tensile strength, carbon content of samples was varied. [12][13][14][15][16] …”

Section: Measurement Of Tensile Strength During Solidifi-mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Generation Mechanism of Unevenness of Ultra Low Carbon Steel at Initial Stage of Solidification

Mizukami

Yamanaka

2010

ISIJ International

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Metallurgical Aspects of Casting High‐Manganese Steel Grades

et al. 2006

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The possibility of using new, high-strength steels with an attractive forming behaviour (e.g. induced plasticity steels) in automotive manufacturing, offers a significant potential for improvement in the area of reducing the weight while simultaneously increasing crash safety. Induced plasticity steels not only possess high strength but also excellent elongation properties and high energy absorption capacities due to the TRIP and TWIP effects, Table 1. [1±4] This profile of mechanical properties is of great interest for crash-relevant automotive components.Common TWIP steel concepts are based on high Mn and Al contents, which are known to cause various problems during steelmaking. The search for suitable primary and secondary steelmaking processes, and the feasibility of casting these steel grades on conventional continuous casting machines, is the focus of ongoing research. The aim of the work presented here is to provide a basis for decisions on the subsequent development of the industrial production of high-Mn and -Al steels.At the very beginning, the following potential difficulties for the continuous casting of high-Mn, high-Al steels were identified: [5] ± high-temperature strength: is expected to be extremely high for these steels, and thus may be a problem for the strand guiding and soft reduction system in casting machines;± hot tearing: the wide brittle-temperature range during the solidification of high-Mn and -Al steels indicates a high crack susceptibility;± segregation at the micro-and macroscopic levels: possible formation of banded structures, resulting in difficulties during further processing;± non-metallic inclusions: the possible interaction between precipitates and mechanical properties means that steel cleanliness levels (secondary metallurgy) should be defined;± scale formation: partial oxidation plays a role in the formation of surface cracks in the casting and rolling process.This list does not consider necessary process adjustments, such as the development of suitable mold powders for highAl steels.The work presented here is concerned with the high-temperature mechanical properties of an high strength structural steel (HSSS) steel and the high-Mn, high-Al steel X50MnAl 25 1 in comparison to common ultra low carbon (ULC) and electrical sheet (ES) steels, the latter both known not to cause many problems during the continuous casting process. MethodologyThe high-temperature mechanical properties and the crack susceptibility were analyzed using the SSCT (submerged split-chill tensile) method. The principle of this testing method is described in detail elsewhere. [6±8] The SSCT test was developed to simulate the shell straining during the continuous casting process. A steel cylinder, split in two halves, is submerged in a liquid steel melt inside an induction fur- COMMUNICATIONS

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A Study about the Influence of Carbon Content in the Steel on the Casting Behavior

Xia¹,

Bernhard²,

Ilie³

et al. 2011

steel research int.

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In the casting process of steels with a C‐content ranging from 0.09 to 0.53 mass%, austenite is formed as secondary crystal phase by peritectic reaction between crystal of δ ferrite and residual melt. For unalloyed or micro‐alloyed steels the C‐content or C‐equivalent influences the casting behavior of steel in the mould, such as strand shell growth, crack formation, heat transfer, temperature fluctuation in the copper plate, mould level fluctuation and oscillation marks formation. The negative casting behavior like the uneven strand shell growth, the deep oscillation mark formation, the high mould level fluctuation, the crack formation on the strand surface were found mostly for steel with C‐content or Cp between 0.10–0.13 mass%. The strand shell structure (strand shell growth, mushy zone, δ + γ phase transformation) and shrinkage of the strand shell were simulated depending on the C‐content by means of mathematical simulation. On the basis of the simulation results and of the measured high temperature strength of steel the dependence of stiffness and the irregularity of the shrinkage of strand shell on the C‐content was investigated. It was found that the stiffness and irregularity of the shrinkage of the strand shell reach the maximum value at a C‐content of about 0.12 mass%.

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High Temperature Deformation Behavior of Peritectic Carbon Steel during Solidification.

Cited by 25 publications

References 28 publications

Generation Mechanism of Unevenness of Ultra Low Carbon Steel at Initial Stage of Solidification

Generation Mechanism of Unevenness of Ultra Low Carbon Steel at Initial Stage of Solidification

Metallurgical Aspects of Casting High‐Manganese Steel Grades

A Study about the Influence of Carbon Content in the Steel on the Casting Behavior

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