A356铝合金近球晶组织三维重构及空间结构表征  

Three-dimensional Reconstruction and Space Structure Characterization of A356 Al Near Spherulite Microstructure

作　　者：朱会[1,2] 杨湘杰[1,2] 郭洪民[3,2] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031 [2]江西省高性能精确成形重点实验室,江西南昌330031 [3]南昌大学材料科学与工程学院,江西南昌330031

出　　处：《热加工工艺》2013年第17期27-31,共5页Hot Working Technology

基　　金：国家自然科学基金项目(50965015;50804023);江西省青年科学家培养对象计划项目(20122BCB23001);江西省教育厅科技项目(GJJ12032);江西省自然科学基金项目(20122BAB206021);高校博士点专项科研基金项目(20113601110008)

摘　　要：应用LSPSF流变铸造工艺,制备了A356铝合金半固态浆料。应用基于连续切片技术的三维重构方法,对流变铸造A356铝合金微观组织进行了三维重构,获得了A356铝合金微观组织的三维空间结构及其分布状况。定义了三个定量表征的参量,从三维的角度描述了初生固相的数量、大小和平均等效直径。得出流变铸造A356铝合金微观组织的固相分数f V=74%,形状因子F=0.51,平均当量直径=91.45μm。Using LSPSF rheocasting process, the preparation of semi-solid slurry of A356 alloy were studied. Through the application of 3D reconstruction based on serial sectioning technique, three-dimensional reconstruction of A356 aluminum alloy microstructure on the rheocasting were introduced. A356 aluminum microscopic three-dimensional structure of the microstructure and its distribution was gotten. Three quantitative characterization parameters from the angle of the three-dimensional description of the nascent solid phase number, size, and the average equivalent diameter is defmed. The rheocasting A356 alloy process of solid fractionfv =74%, shape factor F=0.51, average equivalent diameter D=91.45 μm is gotten.

关 键 词：三维重构 连续切片 空间结构 定量表征 流变铸造 

分 类 号：TG249.2[金属学及工艺—铸造]