钢管2025，Vol.54Issue(1)：48-51,4.DOI:10.19938/j.steelpipe.1001-2311.2025.1.48.51
Mn含量对13Cr不锈钢油管冷裂敏感性的影响
Influence of Mn Content on Cold-crack Sensibility of 13Cr Stainless Steel Tubing
范淑敏 1陈丽 1扈立1
作者信息
- 1. 天津钢管制造有限公司,天津 300301
- 折叠
摘要
Abstract
Addressing the different cold-crack trends of the 13Cr stainless steel pipes with different Mn contents,the effect by Mn content on the cold-crack sensibility of the 13Cr stainless steel tubing is studied and the causes for after-rolling cracking of it are explored by means of separately measuring the influence of Mn content on phase transformation tempera-tures and volume effects of the longitudinal,radial and circumferential specimens of the pipe,and the stress analysis of the phase transformation process thereof.The results show that the martensitic transformation temperature(Ms)falls down,while the volume effect grows up as the Mn content increases,among which,the radial specimen presents the most signi-ficant change in length which leads to the increase of the circumferential tensile strain of the as-rolled pipe during the mar-tensitic transformation process,ultimately causing excessive circumferential tensile stress on the outer surface of the pipe,and thus resulting in increase of the cracking risk.关键词
油管/13Cr不锈钢/Mn含量/冷裂/马氏体相变Key words
tubing/13Cr stainless steel/Mn content/cold-crack/martensitic phase transformation引用本文复制引用
范淑敏,陈丽,扈立..Mn含量对13Cr不锈钢油管冷裂敏感性的影响[J].钢管,2025,54(1):48-51,4.
