采用喷射成形和锻造工艺制备了Al-8.5Fe-1.3V-1.7Si合金,通过金相、扫描电镜和力学性能测试等实验,对锻件组织和性能进行了分析.结果表明:"闷车+包套锻造"工艺对喷射成形Al-8.5Fe-1.3V-1.7Si合金坯件的致密化效果好于用自由锻造和包套锻造致密化的合金,采用该工艺可以制备出组织和性能优良的耐热铝合金材料."闷车+包套锻造"锻件在室温下的抗拉强度(σb)达到407 MPa,屈服强度(σ0.2)达到344MPa,延伸率(δ5)为7.6%;在315℃,锻件的σb,σ0.2,δ5分别为222,216 MPa,7.2%.
参考文献
[1] | Skinner D J;Rye R L;Rayhould D et al.Dispersion strengthened Al-Fe-V-Si alloy[J].Scripta Metallurgica et Materialia,1986,20(06):867. |
[2] | Chellman D J;Ekvall J C;Rainen R A .Elevated temperature PM aluminum alloys for aircraft structure[R].Metal Powder Report,1988. |
[3] | Franck L R E;Hawk J A .Effect of very high temperatures on the mechanical properties of Al-Fe-V-Si alloy[J].Scripta Metallurgica et Materialia,1989,23(01):113. |
[4] | Ravichandran K S;Darakadasa E S .Advanced aerospace Al alloys[J].Journal of Metals,1987,39(05):28. |
[5] | Gilman P S;Das S K .Rapid solidified aluminum alloys for high temperature/high stiffness applications[R].Metal Powder Report,1989. |
[6] | Leng Y;Porr W C;Gangloff R P .Tensile deformation of 2168and Al-Fe-V-Si aluminum alloys at elevated temperatures[J].Scripta Metallurgica et Materialia,1990,24(11):2163. |
[7] | Hariprasad S;Sastry S M L;Jerina K L .Deformation characteristics of the rapidly solidified Al-8.5Fe-1.2V-1.7Si alloy[J].Scripta Metallurgica et Materialia,1993,29(04):463. |
[8] | 朱宝宏,熊柏青,张永安,韦强,刘红伟,石力开,胡敦芫.喷射成形Al-8.5Fe-1.1V-1.9Si耐热铝合金中弥散强化相体积分数的确定[J].稀有金属,2002(06):429-432. |
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%