研究了双级时效处理对7B04铝合金预拉伸厚板的组织和性能的影响.采用TEM对时效组织变化进行了分析,并对力学性能和电导率进行了测试.结果表明:采用双级时效处理实现了晶内和晶界析出相的长大和粗化过程;随着第二级时效温度的升高,合金的强度随之下降,电导率升高.采用第二级160 ℃时效时,时效时间在12～24 h之间合金的强度与T651制度(峰时效的抗拉强度为595 MPa)相比下降了10%～13%左右,而合金的电导率可达21.3～22.3 MS/m之间,伸长率保持在10%～11%左右.
参考文献
| [1] | Heinz A;Haszler A;Keidel C et al.[J].Materials Science and Engineering,2000,A280:102. |
| [2] | Srivatsan T S .[J].Journal of Materials Science,1992,27(17):4772. |
| [3] | Zakharov V V;Rostova T D .[J].Met Sci Heat Treatment,1995,37(5-6):203. |
| [4] | Mukhopadhyay A K;Reddy G M;Prasad K S.[A].Australia:Institute of Materials Engineering Australia Ltd,2004:883. |
| [5] | Clinch M R;Daval R;Harris S J.[A].Australia:Institute of Materials Engineering Australia Ltd,2004:145. |
| [6] | Kaibyshwv R;Sitdikov O;Goloborodko A et al.[J].Materials Science and Engineering,2003,A344:348. |
| [7] | Park J K;Ardell A J .[J].Metallurgical and Materials Transactions,1983,14A(10):1957. |
| [8] | Cina B;Ranish B .[P].US 3856584,1974. |
| [9] | Brown M H .[P].US 4477292,1984. |
| [10] | Danh Nguyen Cong;Rajan Krishna;Wallace W .[J].Metallurgical and Materials Transactions,1983,14A:1843. |
| [11] | Ferrer C P;Koul M G;Connolly B J et al.[J].Corrosion,2003,59(06):520. |
| [12] | Werenskiold J C;Deschamps A;Brechet Y C .[J].Materials Science and Engineering,2000,A293:267. |
| [13] | Tsai T C;Chuang T H .[J].Materials Science and Engineering,1997,A225:135. |
| [14] | Najjar D;Magnin T;Warner T J .[J].Materials Science and Engineering,1997,A238:293. |
| [15] | 王学书,聂波,谢延翠.热处理制度对7075铝合金电导率的影响[J].轻合金加工技术,2001(07):40-42,49. |
| [16] | Salazar-Guapuriche M A;Zhao Y Y .[J].Materials Science Forum,2006,519-521:853. |
| [17] | 李志辉,熊柏青,张永安,朱宝宏,刘红伟,王锋.单级时效对7B04预拉伸厚板组织和性能的影响[J].中国有色金属学报,2005(11):1670-1674. |
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%