摘要
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407MPa,屈服强度(σ0.2)达到344MPa,延伸率(δ)为7.6%;在315℃,锻件的σ,σ,δ分别为222,216MPa,7.2%。
Al-8.5Fe- 1.3V-1.7Si alloy was fabricated by spray forming and forging processes. The microstructure and mechanical properties of the alloy were investigated by means of optical microscope, scanning electron microscope and tensile test. The effect of densification of spray formed Al-8.5Fe- 1.3V-1.7Si alloys by pressing plus capsule forging process is better than by free forging process or capsule forging process. Spray formed Al-8.5Fe- 1.3V-1.7Si alloy after pressing plus capsule forging processes displays excel- lent microstructure and performance. The σb, σ0.2 and σ5 of the as-forged alloys are 407, 344 MPa and 7.6% at room temperature, respectively. At 315 ℃, the σb, σ0.2 and σ5 are 222, 216 MPa and 7.2%, respectively.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第2期255-258,共4页
Chinese Journal of Rare Metals
基金
国家高技术研究发展计划资助项目(2003AA305440)
关键词
喷射成形
微观组织
力学性能
耐热铝合金
spray forming
microstructure
mechanical properties
heat-resistant aluminum alloy
