残余元素对低合金钢连铸坯高温延塑性的影响

钢铁, 2009, 44(2): 32-0.

残余元素对低合金钢连铸坯高温延塑性的影响

1.1.北京科技大学冶金与生态工程学院，北京 100083；2.钢铁研究总院连铸技术国家工程研究中心，北京 100081；3.广东省韶关钢铁集团有限公司，广东韶关 512123

1.1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

2.2. National Engineering Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081, China； 3. Shaoguan Iron and Steel Group Co., Ltd.， Shaoguan 512123, Guangdong, China

关键词：残余元素;低合金钢;高温延塑性;脆性温度区

Effect of Residuals on Hot Ductility of Low Alloy Steel CC Slab

GENG Mingshan , WANG Xinhua , XIANG Li , ZHANG Jiongming , XIAO Jiguang

Keywords： residual;low alloy steel;hot ductility;low ductility region

采用Gleeble1500热模拟试验机测试了含有一定量残余元素Cu、As和Sn的低合金钢连铸坯的高温延塑性。低合金钢的第Ⅰ脆性温度区在ts～1340 ℃之间，第Ⅲ脆性温度区在920～730 ℃之间。由于钢中Cu、As和Sn等残余元素含量比较高，因此第Ⅲ脆性温度区比较宽，深度比较大。

The hot ductility of low alloy steel continuous cast slab was measured on Gleeble1500 tensile test machine. It was found that the low ductility temperature regionⅠof low alloy steel was between ts and 1340 ℃ and the low ductility region Ⅲ was between 920730 ℃. As the steel contained some Cu, As and Sn, the low ductility region Ⅲ was very wide and deep.

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