通过拉伸力学性能测试和断口形貌分析,研究了2195铝锂合金冷轧薄板的各向异性随时效时间变化的规律.结果发现:在150℃时效条件下,峰值时效前,随时效时间的增加,合金的各向异性程度逐渐下降,过时效时合金的各向异性比峰值时效时有所增加;延伸率各向异性大于强度各向异性.150℃/24h时效时,与轧向成0°和45°方向试样的断裂机理不同,存在断裂方式的各向异性.最后对该合金各向异性的主要形成机理进行了初步探讨.
参考文献
| [1] | HOPKINS A K;JATA K V;RJOJA R J.Isotropic wrought aluminum-lithium plate development technology[J].Materials Science Forum,1996(217-222):421-426. |
| [2] | JATA K V;HOPKINS A K;RJOJA R J.The anisotropy and texture of Al-Li alloys[J].Materials Science Forum,1996(217-222):647-654. |
| [3] | 孟亮;郑修麟 .铝锂合金力学性能的各向异性[J].有色金属,1996,4(48):82-88. |
| [4] | RJOJA R J .Fabrication methods to manufacture isotropic Al-Li alloys and products for space and aerospace applications[J].Materials Science and Engineering A,1998,257:100-107. |
| [5] | Cho KK;Lee CW;Kwun SI;Shin MC;Chung YH .Effects of grain shape and texture on the yield strength anisotropy of Al-Li alloy sheet[J].Scripta materialia,1999(6):651-657. |
| [6] | VASUDEVAN A K;PRZYSTUPA M A;FRICKE W G .Effect of composition on crystallographic texture in hot-rolled Al-Li-Cu alloys[J].Materials Science and Engineering A,1996,208(02):172-180. |
| [7] | KIM NACK J;LEE EUI W .Effect of precipitate on the anisotropy of Al-Li alloy 2090[J].ACTA METALLURGICA ET MATERIALIA,1993,41(03):941-948. |
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%