ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2010, Vol. 31 ›› Issue (2): 51-53.

• 组织和性能 • 上一篇    下一篇

高温回火对1 Crl2Ni3Mo2VN耐热钢力学性能和组织的影响

谢学林1, 杨钢2, 王泽忠1, 傅骏1, 雍歧龙2   

  1. 1四川工程职业技术学院材料工程系,德阳618000;
    2钢铁研究总院结构材料研究所,北京100081
  • 收稿日期:2009-09-10 出版日期:2010-04-01 发布日期:2022-11-16
  • 作者简介:谢学林(1972-),男,助理工程师,硕士研究生,主要从事超(超)临界火电机组汽轮机叶片钢的开发研究。

Effect of High Temperature Tempering on Structure and Mechanical Properties of Heat-Resistant Steel lCrl2Ni3Mo2VN

Xie Xuelin1, Yang Gang2, Wang Zezhong1, Fu Jun1, Yong Qilong2   

  1. 1 Dept of Materials Engineering, Sichuan Engineering Technical College, Deyang 618000;
    2 Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081
  • Received:2009-09-10 Published:2010-04-01 Online:2022-11-16

摘要: 研究了1Cr12Ni3Mo2VN钢1010℃1 h油冷,2次580~620℃1 h回火空冷后的力学性能和组织。试验结果表明,在620℃回火拉伸试样中,回火马氏体板条界析出大量聚集的粗化的块状M23C6碳化物,试样塑性变形以孪晶方式进行,塑性较低;580℃回火拉伸试样塑性变形以滑移方式进行,塑性较好。该钢最佳回火工艺为两次580℃1 h空冷。

关键词: 耐热钢1Cr12Ni3Mo2VN, 高温回火, 拉伸性能, 组织

Abstract: Structure and mechanical properties of steel !Crl2Ni3Mo2VN quenched at 1 010 °C for 1 h, oil cooling and double tempered at 580 ~620 °C for 1 h, air cooling have been studied. Test results show that in tensile specimen tempered at 620 °C ,a large amount of coarsening block M23 C6 carbides precipitate at boundary of tempered martensite lath, and the plastic defonnation of specimen goes on by means of twin's motion with lower plasticity ; but the plastic deformation of tensile specimen tempered at 580 °C . goes on by means of slipping motion with better plasticity. The optimum tempering process of the steel is double tempering at 580 °C  for 1 h, air cooling.