石油化工高等学校学报

石油化工高等学校学报 ›› 2012, Vol. 25 ›› Issue (3): 64-66.DOI: 10.3969/j.issn.1006-396X.2012.03.014

• 化工机械 • 上一篇    下一篇

二次热循环对2.25Cr1Mo钢组织的影响

胡传顺1,秦华1,马喜龙1,朱健2   

  1. (1.辽宁石油化工大学机械工程学院,辽宁抚顺113001;2.抚顺市特种设备监督检验所,辽宁抚顺113006)
  • 收稿日期:2012-03-14 修回日期:1900-01-01 出版日期:2012-06-25 发布日期:2012-06-25
  • 作者简介:胡传顺(1962-),男,辽宁大连市,教授,博士
  • 基金资助:
    辽宁省教育厅科学技术研究项目(LS2010098)

Effect of Dual Thermal Cycle on Microstructure of 2.25Cr1Mo Steel

  1. 1.School of Mechanical Engineering, Liaoning Shihua University, Fushun Liaoning 113001, P. R. China;  2. Fushun Special Equipment Supervision Test Institute, Fushun Liaoning 113006, P.R.China
  • Received:2012-03-14 Revised:1900-01-01 Published:2012-06-25 Online:2012-06-25

摘要: 通过扫描电镜(SEM)、能谱(EDS)分析方法,对2.25Cr1Mo钢经受二次热循环后的组织进行了分析。结果表明,经过二次热循环作用,获得贝氏体组织。但经第一次峰值温度热循环作用所形成的粗大原奥氏体晶界,并未在第二次热循环作用后产生细化,仍然保持第一次热循环所形成的粗大的原奥氏体晶界形态。能谱分析结果表明,微区成分比较均匀,说明试样经受第二次热循环作用后,奥氏体均质化进行得较为充分。颗粒状组织微区成分与基体相比,铬元素含量增高,可推测颗粒状组织形成了以Fe,Cr为主的第二相碳化物。

关键词: 2.25Cr1Mo钢 , 热循环 , 组织 , 峰值温度 ,  晶粒尺寸

Abstract: Through SEM observation, EDS analyses, the effect of dual thermal cycle on microstructure of 2.25Cr1Mo steel was analyzed. The results show that dual thermal cycle results in the formation of bainite. However, grain boundary of coarse prior austenite resulted from first thermal cycle does not become finer and still appears to maintain the original forms of it even though subjected second thermal cycle. EDS analyses indicate that micro zone composition are uniformly distributed which means that austernitizing homogenization is completed more sufficiently after subjected second thermal cycle. Micro zone Cr content of granular structure increases compared with matrix. It is assumed that carbides mainly composed of Fe, Cr element are formed among granular structure.

Key words: 2.25Cr1Mo steel, Thermal Cycle, Microstructure, Peak Temperature, Grain Size

引用本文

胡传顺,秦华,马喜龙,朱健. 二次热循环对2.25Cr1Mo钢组织的影响[J]. 石油化工高等学校学报, 2012, 25(3): 64-66.

HU Chuan-shun,QIN Hua,MA Xi-long,ZHU Jian. Effect of Dual Thermal Cycle on Microstructure of 2.25Cr1Mo Steel[J]. Journal of Petrochemical Universities, 2012, 25(3): 64-66.

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