锻造对Al-Fe-V-Si合金力学性能与显微组织的影响  

Effect of Forging on the Mechanical Properties and Microstructures of Al-Fe-V-Si Alloy

作　　者：宋旼[1] 肖代红[1] 

机构地区：[1]中南大学 粉末冶金国家重点实验室,湖南长沙410083

出　　处：《稀有金属材料与工程》2007年第A03期208-210,共3页Rare Metal Materials and Engineering

摘　　要：通过拉伸实验、光学显微镜和透射电子显微镜研究了锻造对Al-Fe-V-Si耐热铝合金力学性能和显微组织的影响。拉伸实验表明:锻造可以改善Al-Fe-V-Si合金的屈服强度和抗拉强度,更为重要的是,二次锻造后合金的延伸率得到了大幅度的提高,达到工业可以使用的范围。显微组织分析表明:锻造可以减少喷射沉积造成的分层现象,有效地破碎了层与层之间的氧化膜,加强了粉末颗粒之间的物理冶金结合,从而提高了该合金的力学性能。The effect of forging on the mechanical properties and microstructures of Al-Fe-V-Si heat-resistant aluminum alloy has been studied by tensile testing, optical microscopy and transmission electron microscopy. Tensile testing indicates that forging can improve the yield strength and tensile strength of Al-Fe-V-Si alloy. Most importantly, the elongation of the alloy has been much improved after forging twice, and thus can be used industrially. Microstructure studies illustrated that _forging can decrease the layers formed during spray deposition, break up the oxygen-contained film, and strengthen the metallurgical combination between the powder particles to improve the mechanical properties of the alloy.

关 键 词：AL-FE-V-SI合金 喷射沉积 锻造 力学性能 显微组织 

分 类 号：TG115[金属学及工艺—物理冶金]