Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS

赵艳宇; 李国忠; 王福明

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Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS

更新时间：2026-01-21

- Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS
- Special Steel Vol. 30, Issue 4, Pages: 17-18(2009)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 兴澄特钢公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：04 January 2009，
  
  Online First：20 December 2022，
  
  Published：20 December 2009
- 稿件说明：
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赵艳宇, 李国忠, 王福明. Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS[J]. Special Steel, 2009, 30(4): 17-18.
DOI：

赵艳宇, 李国忠, 王福明. Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS[J]. Special Steel, 2009, 30(4): 17-18. DOI：

摘要

应用Gleeble 1500D热模拟试验机

研究了非调质易切削钢38MnVS(%:0.42C、1.29Mn、0.09V、0.067S)370 mm×490 mm连铸坯的高温延塑性及变形断裂机理。结果表明:38MnVS钢的零强度温度(ZST)为1 370℃和零塑性温度(ZDT)为1335℃;38MnVS钢在熔点(TS)到600℃的温度区间内存在2个脆性区

第Ⅰ脆性温度区为TS～1250℃

第Ⅲ脆性温度区为875～600℃

因此

该钢连铸坯的矫直温度应在875℃以上。

Abstract

Elevated temperature ductility and deformed fracture mechanism of 370 mm×490 mm cast bloom of non- quenched and tempered free cutting steel 38MnVS(%:0.42C

1.29Mn

0.09V

0.067S)have been studied by Gleeble 1500D thermal simulator. Results showed that the Zero Strength Temperature(ZST)and Zero Ductility Temperature (ZDT)of steel 38MnVS were respectively1370 ℃ and1335 ℃;there were two brittle zones for steel 38MnVS in temperature range from melting point Ts to 600 ℃ i.e. brittle zone I-Ts～1250 ℃ and brittle zone Ⅲ 875～600 ℃

therefore the straightening temperature of cast bloom of the steel should be more than 875 ℃.

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