| 非调质易切削钢38MnVS连铸坯的高温延塑性 |
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| 引用本文： | 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. |
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| 作者姓名： | 赵艳宇 李国忠 王福明 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 非调质钢 连铸坯 高温延塑性 |
| 收稿时间： | 2009-01-04 |
Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS |
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| 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. |
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| Authors: | Zhao Yanyu Li Guozhong Wang Fuming |
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| Affiliation: | 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083;
2 Xingcheng Special Steel Co, Jiangyin 214429 |
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| 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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| Keywords: | 38MnVS |
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