期刊文献+

Effect of Deep Cryogenic Treatment on Formation of Reversed Austenite in Super Martensitic Stainless Steel

Effect of Deep Cryogenic Treatment on Formation of Reversed Austenite in Super Martensitic Stainless Steel
分享 导出
摘要 The effect of deep cryogenic treatment on the formation of reversed austenite(RA)in super martensitic stainless steel was investigated.RA was found to form in steels without(A)and with(B)deep cryogenic treatment.The volume fraction of RA initially increased and then decreased with increasing tempering temperature over 550-750 ℃for the two steels,which were quenched at 1 050 ℃.In addition,for both with and without deep cryogenic treatment,the RA content reached a maximum value at 650 ℃ although the RA content in steel B was greater than that in steel A over the entire range of tempering temperatures.Furthermore,the hardness(HRC)of steel B was greater than that of steel A at tempering temperatures of 550-750 ℃.From these results,the basic mechanism for the formation of RA in steels A and B was determined to be Ni diffusion.However,there were more Ni-enriched points,a lower degree of enrichment,and a shorter diffusion path in steel B.It needed to be noted that the shapes of the RA consisted of blocks and stripes in both steels.These shapes resulted because the RA redissolved and transformed to martensite along the martensitic lath boundaries when the tempering temperature was 650-750 ℃,and a portion of RA in the martensitic lath divided the originally wider martensitic laths into a number of thinner ones.Interestingly,the RA redissolved more rapidly in steel B and consequently resulted in a stronger refining effect. The effect of deep cryogenic treatment on the formation of reversed austenite (RA) in super martensitic stainless steel was investigated. RA was found to form in steels without (A) and with (B) deep cryogenic treatment. The volume fraction of RA initially increased and then decreased with increasing tempering temperature over 550-- 750 ℃ for the two steels, which were quenched at 1050 ℃. In addition, for both with and without deep cryogenic treatment, the RA content reached a maximum value at 650 ℃ although the RA content in steel B was greater than that in steel A over the entire range of tempering temperatures. Furthermore, the hardness (HRC) of steel B was greater than that of steel A at tempering temperatures of 550--750 ℃. From these results, the basic mechanism for the formation of RA in steels A and B was determined to be Ni diffusion. However, there were more Ni enriched points, a lower degree of enrichment, and a shorter diffusion path in steel B. It needed to be noted that the shapes of the RA consisted of blocks and stripes in both steels. These shapes resulted because the RA redissolved and trans- formed to martensite along the martensitic lath boundaries when the tempering temperature was 650--750 ℃, and a portion of RA in the martensitie lath divided the originally wider martensitic laths into a number of thinner ones. In- terestingly, the RA redissolved more rapidly in steel B and consequently resulted in a stronger refining effect.
作者 Shi-qi ZHENG Wen JIANG Xuan BAI Shao-hong LI Kun-yu ZHAO Xin-kun ZHU Shi-qi ZHENG;Wen JIANG;Xuan BAI;Shao-hong LI;Kun-yu ZHAO;Xin-kun ZHU;Department of Materials Science and Engineering,Kunming University of Science and Technology;
出处 《钢铁研究学报:英文版》 SCIE CAS CSCD 2015年第5期451-456,共6页 Journal of Iron and Steel Research
关键词 超马氏体不锈钢 逆转奥氏体 深冷处理 马氏体板条 回火温度 扩散路径 体积分数 RA reversed austenite super martensitie stainless steel deep cryogenic treatment diffusion transformation
作者简介 Biography:Shi-qi ZHENG, Bachelor; E-mail:664380787@qq. com Corresponding Author: Kun-yu ZHAO, Master, Professor; E-mail: kyzhaoy@sina, com
  • 相关文献

参考文献21

  • 1S.H. Li, N. Min, L.H. Deng, X.C. Wu, Y.A. Min, H.B. Wang, Mater. Sci. Eng. A 528 (2011) 1247-1250. 被引量:1
  • 2X. P. Lin, Y. Dong, Y. H. Wang, Transactions of Metal Heat Treatment 19 (1998) No. 2, 21-25. 被引量:1
  • 3D. Das, K. K. Ray, A. K. Dutta, Wear 267 (2009) 1361-1370. 被引量:1
  • 4S. H. Li, L. H. Deng, X. C. Wu, H. B. Wang, Y.A. Min, N. Min, Mater. Sci. Eng. A 527 (2010) 7950-7954. 被引量:1
  • 5S. H. Li, L H Deng, X. C. Wu, Cryogenics 50 (2010) 433 -438. 被引量:1
  • 6Y. R. Liu, D. Ye, Q. L. Yong, J. Su, K. Y. Zhao, W. Jiang, J. Iron Steel Res. Int. 18 (2011) No. 11, 60-66. 被引量:1
  • 7X.P. Ma, L.J. Wang, C. M. Liu, S.V. Subramanian, Mater. Sci. Eng. A 528 (2011) 6812-6818. 被引量:1
  • 8X. P. Ma, L. J, Wang, C. M. Liu, S. V. Subramanian, Mater. Sci. Eng. A 539 (2012) 271-279. 被引量:1
  • 9B. R. Kumar, S. Sharma, P. Munda, R. K. Minz, Mater. Des. 50 (2013) 392-398. 被引量:1
  • 10D. Ye, J. Li, W. Jiang, J. Su, K.Y. Zhao, Mater. Des. 41 (2012) 16-22. 被引量:1
投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈