金属学报  2004, Vol. 40 Issue (9): 943-947

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机械研磨诱导316L不锈钢表层组织的演变

吕爱强 刘刚 刘春明

中国科学院金属研究所沈阳材料科学国家(联合)实验室;沈阳 110016;东北大学材料与冶金学院;沈阳 110004

Microstructural Evolution of the Surface Layer of 316L Stainless Steel Induced by Mechanical Attrition

LÜ Aiqiang; LIU Gang;LIU Chunming

Shenyang National Laboratory for Materials Science; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016

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, 40(9): 943-947 .
, , , . Microstructural Evolution of the Surface Layer of 316L Stainless Steel Induced by Mechanical Attrition[J]. Acta Metall Sin, 2004, 40(9): 943-947 .

摘要 参考文献 相关文章 Metrics 全文: PDF(18512 KB)   摘要: 选取具有中等层错能的316L不锈钢进行表面机械研磨处理 (SMAT),制备出纳米结构表层, 用X射线衍射(XRD)和透射电镜(TEM)研究横截面组织的演变过程.晶粒细化机理如下:奥氏体粗晶内部通过位错湮灭和重组形成位错胞;应变量和应变速率的增加诱发了机械孪生,形成了片层状孪晶;孪晶内部通过位错的运动使显微组织逐渐由片层状向等轴状转变,且晶粒尺寸逐渐减小、取向差逐渐增大;最终形成等轴状、取向呈随机分布的纳米晶组织.同时,对层错能对微观变形方式和纳米化行为的影响进行了讨论. 关键词 ： 表面机械研磨处理      Abstract：Nanostructured surface layer was synthesized on 316L stainless steel by means of the surface mechanical attrition treatment (SMAT), the microstructural evolution was examined by using XRD and TEM. A grain refinement mechanism was proposed as follows: the dislocations in the austenite grains annihilate and recombine to form dislocation cells; the increment of strain and strain rate induces mechanical twinning, and lamellar microstructures form; the microstructures translate gradually from lamellar to equiaxed by means of the development of the dislocations in the twins, accompanying by the reduction of grain size and the increment of misorientations; finally, nano--scale grains with equiaxed shape and random crystallographic orientations form. Besides, the effects of staking fault energy on the deformation and grain refinement behaviors were discussed. Key words： surface mechanical    attrition treatment 收稿日期: 2004-02-09      ZTFLH:  TG142.71   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 吕爱强 刘刚 刘春明 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2004/V40/I9/943 [1] Lu K, Lu J. J Mater Sci Technol, 1999; 15: 193 [2] Lu K, Lii J. Mater Sci Eng, 2004; A: in press [3] Nie X, Wang R, Ye Y, Zhou Y, Wang D. Solid State Com-mun, 1995; 96: 729 [4] Wu X, Tao N, Hong Y, Xu B, Lii J, Lu K. Acta Mater,2002; 50: 2075 [5] Tao N R, Wang Z B, Tong W P, Sui M L, Lii J, Lu K.Acta Mater, 2002; 50: 4603 [6] Zhang H W, Hei Z K, Liu G, Lii J, Lu K. Acta Mater,2003; 51: 1871 [7] Tao N R, Zhang H W, Lu H, Lu K. Mater Trans, 2003;44: 1919 [8] Zhang H W, Liu G, Hei Z K, Lii J, Lu K. Acta Metall Sin,2003; 39: 342(张洪旺,刘刚,黑祖昆,吕坚,卢柯.金属学报,2003;39:342) [9] Olson G B, Cohen M. Metall Trans, 1975; 6A: 791 [10] Chen M W, Ma E, Hemker K J, Sheng H W, Wang Y M,Cheng X M. Science, 2003; 300: 1275 [11] Wang K, Liu G, Xu B S, Lii J, Lu K. In: 3th Chin Gonfon Nano-Materials and Technology, Nanjing, 2003: 651(王科,刘刚,许并社,吕坚,卢柯.见:全国第3届纳米材料和技术应用会议论文集,南京, 2003:651) [1] 刘刚 严文聪 于福晓 赵刚 赵骧 左良. Al-12.7Si合金表面强烈塑性变形诱发的纳米化[J]. 金属学报, 2011, 47(6): 649-654. Viewed Full text Abstract Cited   Shared      Discussed