研究了滚压强化多晶纯钛在疲劳前后的显微组织特征和残余应力的变化.结果发现:疲劳强度的提高主要归于形变组织,同时表面粗糙度的降低也起了良好的作用.滚压试样表层TEM组织中形成高密度位错和单个、分散的变形孪晶,历经106以上循环周次后,孪晶-晶界的交互作用是其主要特征.滚压引入的残余压应力和层深均较小,有益贡献也相应降低.
参考文献
| [1] | Altenberger I;Scholtes B;Martin U .Cyclic deformation and near microstructures of shot peened or deep rolled austenitic stainless steel AISI 304[J].Materials Science and Engineering,1999,A264:1-16. |
| [2] | 吕永华;王天宰 .滚压强化对高强螺栓用35CrMoV钢疲劳性能的影响[J].机械工程材料,1989,13(03):46-51. |
| [3] | 北京航空材料研究所 .金属材料的表面喷丸强化[J].机械工程材料,1981,27(06):7-11. |
| [4] | 张建斌,马勤,樊丁,周琦,王静宜.工业纯钛喷丸强化研究[J].稀有金属材料与工程,2001(05):365-368. |
| [5] | Wagner, L .Mechanical surface treatments on titanium, aluminum and magnesium alloys[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,1999(2):210-216. |
| [6] | S. G. SONG;G. T. GRAY III .STRUCTURAL INTERPRETATION OF THE NUCLEATION AND GROWTH OF DEFORMATION TWINS IN Zr AND Ti—Ⅱ. TEM STUDY OF TWIN MORPHOLOGY AND DEFECT REACTIONS DURING TWINNING[J].Acta Metallurgica et Materialia,1995(6):2339-2350. |
| [7] | D.R.Chichili;K.T.Ramesh;K.J.Hemker .The high-strain-rate response of alpha- titanium: experiments, deformation mechanisms and modeling[J].Acta materialia,1998(3):1025-1043. |
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%