用新装置测定DP590钢的凝固相转变曲线
Determine of the Solidification Phase Transition Curve of DP590 Steel with New Device
摘 要
利用自行开发设计的高温凝固相转变测定装置, 研究了DP590钢在不同冷速下的高温凝固相转变过程, 得到了凝固过程中液相(L)到高温铁素体 (δ)再到奥氏体 (γ)的相变温度, 并绘制了该钢的凝固相转变(SPT)曲线。结果表明: 当冷速为0.006 ℃·s-1时, 该钢δ相转变开始温度在1 520~1 535 ℃之间, 结束温度在1 490 ℃左右; 冷速增至0.33 ℃·s-1时, δ相转变开始温度降至1 510~1 520 ℃之间, 结束温度在1 480~1 490 ℃之间; γ相转变开始温度为1 460 ℃之上, 结束温度在1 435 ℃以下; 随着冷速的增大, 相转变模式会发生变化, 相图会向下移动, 各相变反应的温度区间减小。
高温凝固
相变
凝固相转变曲线
DP590 steel
high temperature solidification
phase transformation
solidification phase transition curve
Abstract
A self-designed experimental apparatus was employed to study the high temperature solidification phase change process of DP590 steel at the different cooling rate and get the phase-transition temperature from liquid phase (L) to high temperature ferrite phase (δ) then to austenite phase (γ). In addition, the solidification phase transition (SPT) curves of DP590 steel were plotted. Results show that when cooling rate was 0.006 ℃·s-1, the beginning temperature of δ phase transition was between 1 520 ℃ and 1 535 ℃, the finishing temperature of δ phase transition was about 1 490 ℃. As the cooling rate reached to 0.33 ℃·s-1, the beginning temperature of δ phase transition was between 1 510 ℃ and 1 520 ℃, the finishing temperature of δ phase transition was between 1 480 ℃ and 1 490 ℃. The beginning temperature of γ phase transition was above 1 460 ℃, the finishing temperature of γ phase transition was below 1 435 ℃. The phase transition mode changed, the phase diagram moved down, and the temperature interval of phase reaction decreased, with increasing the cooling rate.
中图分类号 TG2443 DOI 10.11973/jxgccl201506011
所属栏目 新材料新工艺
基金项目 国家自然科学基金资助项目(51044002); 科技部国际合作项目(2010DFB70630); 内蒙古自治区高等学校科学研究项目(NJcxy08070); 内蒙古自治区研究生教育创新计划资助项目(S20131012704)
收稿日期 2014/1/15
修改稿日期 2015/4/7
网络出版日期
作者单位点击查看
备注王昊杰 (1988—), 男, 山西忻州人, 硕士研究生。
引用该论文: WANG Hao-jie,MA Yong-lin,CHEN Zhong-yi,LIU Bing-guang,XU Jian-fei,XING Shu-qing. Determine of the Solidification Phase Transition Curve of DP590 Steel with New Device[J]. Materials for mechancial engineering, 2015, 39(6): 53～56
王昊杰,麻永林,陈重毅,刘炳广,许建飞,邢淑清. 用新装置测定DP590钢的凝固相转变曲线[J]. 机械工程材料, 2015, 39(6): 53～56
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参考文献
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