陈毛川,王福明,陶素芬,王唐林,程慧静

• 1:北京科技大学钢铁冶金新技术国家重点实验室
• 2:北京科技大学冶金与生态工程学院

摘要(Abstract)：

采用Gleeble 1500热模拟试验机对40Cr的高温塑性进行了测定,并应用扫描电镜对拉断后试样的断口形貌进行了观察。应用Thermo-Calc热力学计算软件对实验钢在400~1 600℃的主要析出相以及A1和A3温度进行了计算,根据A1和A3温度的计算结果选取不同测试温度的试样进行组织形貌的观察分析,以便深入了解40Cr钢的脆化机理,理解某钢厂生产的40Cr钢频繁出现横裂纹的原因。结果表明:40Cr钢的第Ⅲ脆性温度区为600~900℃,实际生产过程中应避开这一温度范围,在铸坯表面温度高于900℃时进行矫直。

关键词(KeyWords)： 40Cr;热塑性;断口形貌;脆性温度区

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51174020);; 中央高校基本科研业务费专项资金资助(FRF-SD-12-010A)

作者(Author): 陈毛川,王福明,陶素芬,王唐林,程慧静

DOI: 10.13289/j.issn.1009-6264.2014.s1.023

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