固液混合铸造制备Al-10Cr合金的研究  

Preparation of Al-10Cr Alloy by Mixed Liquid-solid Casting

作　　者：程相飞[1] 严红革[1] 陈振华[1] 何建军[1] 

机构地区：[1]湖南大学

出　　处：《特种铸造及有色合金》2005年第2期85-87,共3页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目 (50 2 740 37)

摘　　要：采用固液混合铸造新技术 ,制备了Al 10Cr合金 ,研究了合金熔体过热度 ,加粉量和粉末粒度对材料组织和性能的影响。试验结果表明 :合金熔体的过热度为 3 5℃时最佳 ,当加粉量为 60 %、粉末粒度为 14 7～ 2 46μm时可获得均匀的细晶组织 ,最佳室温力学性能为σb=119MPa ,σ0 .2 =89.5MPa ,δ =1.0 %。Al-10Cr alloy was prepared by mixed liquid-solid casting.The effects of superheating temperature,alloy powder addition and grain size of powder on the microstructure and mechanical properties were investigated.It was found that the alloy with uniform fine grain can be obtained under the conditions of 35 ℃ superheating temperature and 60% powder addition as well as powder granulannity of 147～246 μm.The optimized mechanical properties at room temperature are σ_b=119 MPa,σ_(0.2)=89.5 MPa and δ=1%.

关 键 词：固液混合铸造 AL-CR合金 压铸 

分 类 号：TG249.2[金属学及工艺—铸造]