为探索改善不锈钢耐腐蚀性能的途径,对316L不锈钢施加相同变形量的同步轧制和异步轧制,利用X射线衍射、透射电镜观察、电化学测量和扫描电镜表面观察研究了轧制工艺对钢的显微组织和腐蚀性能的影响.结果表明,经过异步轧制后显微组织中出现大量孪晶界,优化了晶界结构,在酸性介质中的晶间腐蚀敏感性明显减轻;而经过同步轧制后,样品呈现出高位错密度的显微组织,在酸性介质中的耐腐蚀性能降低.异步轧制后耐蚀性能得到改善是由于大量孪晶界的形成优化了晶界结构.
参考文献
| [1] | Jong Kook Lee;Dong Nyung Lee .Shear Texture Development and Grain Refinement in Asymmetrically Rolled Aluminum Alloy Sheets by Varied Reduction per Pass[J].Materials Science Forum,2002(Pt.2):1419-1424. |
| [2] | E. M. Lehockey;G. Palumbo;P. Lin .Grain boundary structure effects on cold work embrittlement of microalloyed steels[J].Scripta materialia,1998(3):353-358. |
| [3] | E.M.Lehockey .Improving the Weldability and Service Performance of Nickel-and Iron-Based Superalloys by Grain Boundary Engineering[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1998(12):3069-3080. |
| [4] | E. M. Lehockey;G. Palumbo;P. Lin;A. M. Brennenstuhl .ON THE RELATIONSfflP BETWEEN GRAIN BOUNDARY CHARACTER DISTRIBUTION AND INTERGRANULAR CORROSION[J].Scripta materialia,1997(10):1211-1218. |
| [5] | H. W. Zhang;Z. K. Hei;G. Liu;J. Lu;K. Lu .Formation of nanostructured surface layer on AISI 304 stainless steel by means of surface mechanical attrition treatment[J].Acta materialia,2003(7):1871-1881. |
| [6] | 吕爱强,刘刚,刘春明.机械研磨诱导316L不锈钢表层组织的演变[J].金属学报,2004(09):943-947. |
| [7] | Mingwei Chen;En Ma;Kevin J. Hemker;Hongwei Sheng;Yinmin Wang;Xuemei Cheng .Deformation Twinning in Nanocrystalline Aluminum[J].Science,2003(5623):1275-1277. |
| [8] | E. A. TRILLO;L. E. MURR .EFFECTS OF CARBON CONTENT, DEFORMATION, AND INTERFACIAL ENERGETICS ON CARBIDE PRECIPITATION AND CORROSION SENSITIZATION IN 304 STAINLESS STEEL[J].Acta materialia,1998(1):235-245. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%