非调质易切削钢38MnVS连铸坯的高温延塑性

特殊钢 ›› 2009, Vol. 30 ›› Issue (4): 17-18.

非调质易切削钢38MnVS连铸坯的高温延塑性

赵艳宇¹, 李国忠^1,2, 王福明¹

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

收稿日期:2009-01-04 出版日期:2009-08-01 发布日期:2022-12-20
作者简介:赵艳宇(1983-),男，研究生，特殊钢品种开发。

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

Zhao Yanyu¹, Li Guozhong^1,2, Wang Fuming¹

1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083;
2 Xingcheng Special Steel Co, Jiangyin 214429

Received:2009-01-04 Published:2009-08-01 Online:2022-12-20

摘要/Abstract

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 ℃.

赵艳宇, 李国忠, 王福明. 非调质易切削钢38MnVS连铸坯的高温延塑性[J]. 特殊钢, 2009, 30(4): 17-18.

Zhao Yanyu, Li Guozhong, Wang Fuming. Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS[J]. Special Steel, 2009, 30(4): 17-18.