挤压态喷射成形8009耐热铝合金组织性能的研究  

Microstructure and Mechanical Properties of Extruded Spray Forming 8009 Heat Resistant Aluminum Alloy

作　　者：张荣华[1] 朱宝宏[2] 郑小平[1] 

机构地区：[1]河北联合大学冶金与能源学院河北省现代冶金重点实验室,河北唐山063009 [2]北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京100088

出　　处：《热加工工艺》2015年第4期61-62,65,共3页Hot Working Technology

基　　金：河北省自然科学基金项目(E2013209268)

摘　　要：采用喷射成形和挤压工艺制备了8009耐热铝合金,通过金相显微镜、扫描电镜和力学性能测试等试验,对挤压件的组织和性能进行了分析。结果表明:挤压态合金在室温下的抗拉强度达到415MPa,屈服强度达到345MPa,伸长率达到22.5%;在250℃时,合金抗拉强度为221MPa,屈服强度为208MPa,伸长率为13.33%。挤压态8009合金经400℃暴露24h后对合金的中温力学性能没有影响。8009 heat resistant aluminum alloys were fabricated by spray forming and extrusion process. The microstructure and mechanical properties of the alloys were investigated by metallographic, scanning electron microscope and tensile test. The results indicate that the tensile strength of the extruded alloy can reach 415 MPa, the yield strength 345 MPa,elongation 22.5% at room temperature. At 250 ℃, the tensile strength of the extruded alloys can reach 221 MPa, the yield strength 208 MPa, elongation 13.33%. The extruded 8009 alloy after exposure at 400 ℃ for 24 h has no impact on the mechanical properties of the alloy.

关 键 词：喷射成形 组织 力学性能 耐热铝合金 

分 类 号：TG113.2[金属学及工艺—物理冶金]