以Mg-12Zn-4Al-0.3Mn(质量分数,%)为母合金,制备了6种合金.实验观察证实,Mg-12Zn-4Al-0.3Mn合金的铸态组织由α-Mg基体和沿晶界分布的准晶Q相组成.在母合金中加入少量的Sr后,亚稳准晶相转变为Mg32(Al,Zn)49平衡相以及Mg51Zn20共晶相.在母合金中复合加入Sr与Ca后,铸态组织出现了Al2Mg5Zn2共晶相.随着Sr含量的增加,合金室温和高温下的力学拉伸强度提高,高温蠕变性能下降;Sr与Ca的复合加入使合金抗拉强度和塑性下降,但高温屈服强度提高.在175℃/70 MPa条件下,Mg-12Zn-4Al-0.2Sr-0.4Ca-0.3Mn合金表现出良好的高温抗蠕变性能.
参考文献
| [1] | Luo A,Pekguleryuz M O.J Mater Sci,1994:29:5259 |
| [2] | Li P J,Zeng D B,Guo X T.Chin Rare Earths,2002;23(2):63(李培杰,曾大本,郭旭涛.稀土,2002;23(2):63) |
| [3] | Luo A A.Int Mater Rev,2004:49:13 |
| [4] | Zeng R C,Ke W,Xu Y B,Han E H,Zhu Z Y.Acta Metall Sin,2001:37:673(曾荣昌,柯伟,徐永波,韩恩厚,朱自勇.金属学报,2001;37:673) |
| [5] | Zhang Z,Couture A,Luo A.Scr Mater,1998:39:45 |
| [6] | Zhang J,Guo Z X,Pan F S,Li Z S,Luo X D.Mater Sci Eng,2007:A456:43 |
| [7] | Zhang Z,Tremblay R.Canad Metall Quart,2000:39:503 |
| [8] | Zhang Z,Tremblay R,Dubé D.Mater Sci Eng,2004;A385:286 |
| [9] | Liu C M,Zhu X R,Zhou H T.Magnesium Phase Diagram.Changsha:Central South University Press,2006:256(刘楚明,朱秀荣,周海涛.镁合金相图集.长沙:中南大学出版社,2006:256) |
| [10] | Higashi I,Shiotani N,Uda M,Mizoguchi T,Katoh H.J Solid State Chem,1981:36:225 |
| [11] | Bergman G,Waugh J L T,Pauling L.Acta Crystal-Logr,1957:10:254 |
| [12] | Bourgeois L,Muddle B C,Nie J F.Acta Mater,2001:49:2701 |
| [13] | Sun Y S,Zhang W M,Min X G.Acta Metall,2001:14:330 |
| [14] | Vogel M,Kraft O,Dehm G,Arzt E.Scr Mater,2001:45:517 |
| [15] | Takeuchi T,Murasaki S,Matsumuro A,Mizutani U.J Non-Cryst Solids,1993:914:156 |
| [16] | Niikura A,Tsai A,Nishiyama N,Inoue A,Masumoto T.Mater Sci Eng,1994:A1387:181 |
| [17] | Petrov D V,Petzow G,Effenberg G.Aluminum-Magnesium-Zinc Ternary Alloys:A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagrams.Weinheim:VCM,1993:57 |
| [18] | Henley C L,Elser V.Philos Mag,1986:53B:59 |
| [19] | Wang S Q,Ye H Q.Philos Mag,1991:64B:551 |
| [20] | Wei L Y,Dunlop G L,Westengen H.Metall Mater Trans,1995:26A:1947 |
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%