固液铸造技术在高锰铝合金中的应用研究  

Solid-liquid Mixed Casting Technology and Application in Al-Mn Alloys

作　　者：刘劲松[1] 蒲玉兴[2] 陈振华[2] 

机构地区：[1]长沙航空职业技术学院机械系,湖南长沙410124 [2]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《热加工工艺》2008年第7期24-26,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50274037)

摘　　要：通过加入同种成分粉末,研究了Al-Mn合金的固液混合铸造工艺,初步探索固液混合铸造后的金相组织及力学性能变化。采用该技术获得的Al-Mn合金坯料的金相显微组织均匀,晶粒细小,呈等轴状或近等轴状。采用固液混合铸造的室温力学性能σb=130MPa,σ0.2=80MPa,δ=1.2%;优于传统铸造和半固态铸造合金,使难以应用的高锰铝合金有了应用可能。The solid-liquid mixed casting of AI-Mn allays was studied by adding same alloys powder, the structure and performance of the material prepared by solid-liquid mixed casting was analyzed. The microstructure of samples obtained by the technology is even and the grain is fine, presents equaiaxial shape or approximate equaiaxial shape. The optimum mechanical properties after hot extrusion are that σb=130MPa,σ0.2=80MPa, δ=1.2%, which are preferable to those of conventional casting and semi-solid casting. Thus, the high manganese Al-alloy, which is difficult to be used, has the possibilities of application.

关 键 词：固液混合铸造 锰铝合金 显微组织 

分 类 号：TG146.2[一般工业技术—材料科学与工程]