对316L不锈钢进行表面机械研磨处理(SMAT),获得表面为纳米晶、晶粒尺寸沿厚度方向逐渐增大的梯度组织.对SMAT样品进行不同温度的真空退火,研究组织变化.结果表明:当退火温度低于0.5 Tm(Tm为熔点)时,316L不锈钢经SMAT后形成的梯度组织未发生明显的变化.随着退火温度的继续增加,梯度组织发生回复和晶粒长大,但晶粒长大的速度较小.整个退火过程中,内应力和微观应变的释放在SMAT样品的深度方向诱发了机械孪生,并在纳米结构表层中引起马氏体相变.
参考文献
| [1] | Lu K;Lu J .Surface nanocrystallization (SNC) of metallic materials - presentation of the concept behind a new approach[J].Journal of Materials Science and Technology,1999,15:193-197. |
| [2] | Lu K;Lu J .Nanostructured surface layer on metallic materials induced by surface mechanical attrition[J].Materials Science and Engineering,2004,A375-377:38-45. |
| [3] | G. Liu;S.C. Wang;X.F. Lou .LOW CARBON STEEL WITH NANOSTRUCTURED SURFACE LAYER INDUCED BY HIGH-ENERGY SHOT PEENING[J].Scripta materialia,2001(8-9):1791-1795. |
| [4] | Tong W P;Tao N R;Wang Z B;Lu J Lu K .Nitriding iron at lower temperatures[J].SCIENCE,2003,289:686-688. |
| [5] | 刘刚;吕坚;卢柯.金属材料的表面自身纳米化[A].北京:化学工业出版社,2005:1069-1087. |
| [6] | X.Wu;N. Tao;Y. Hong .Microstructure and evolution of mechanically-induced ultrafine grain in surface layer of AL-alloy subjected to USSP[J].Acta materialia,2002(8):2075-2084. |
| [7] | N. R. Tao;Z. B. Wang;W. P. Tong;M. L. Sui;J. Lu;K. Lu .An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment[J].Acta materialia,2002(18):4603-4616. |
| [8] | 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. |
| [9] | Xingping YONG,Gang LIU,Ke LU,Jian LU.Characterization and Properties of Nanostructured Surface Layer in a Low Carbon Steel Subjected to Surface Mechanical Attrition[J].材料科学技术学报(英文版),2003(01):1-4. |
| [10] | Wang Z B;Tao N R;Tong W P;Lu J Lu K .Defusion of chromium in nanocrystalline iron produced by means of surface mechanical attrition treatment[J].Acta Materialia,2003,51(14):4319-4329. |
| [11] | 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. |
| [12] | Klement U;Erb U;Sherik Ame;Aust K T .Thermal stability of nanocrystalline Ni[J].Materials Science and Engineering,1995,A203:177-186. |
| [13] | Surganaragana C;Froes F H .Production of nanostructure Titanium-based alloys by mechanical alloying[J].Nano-Structured Materials,1992,1(02):191-196. |
| [14] | Lu K;Wang J T;Wei W D .Comparison of properties of nanocrystalline and amorphous Ni-P alloy[J].Journal of Physics D:Applied Physics,1992,25(05):808-812. |
| [15] | K. LU;Z. F. DONG;I. BAKONYI;A. CZIRAKI .THERMAL STABILITY AND GRAIN GROWTH OF A MELT-SPUN HfNi_5 NANOPHASE ALLOY[J].Acta Metallurgica et Materialia,1995(7):2641-2647. |
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%