TiAl基合金组织对拉伸性能的影响  

EFFECT OF MICROSTRUCTURE ON TENSILE PROPERTIES OF TiAl BASED ALLOYS

作　　者：蒲忠杰[1] 石建东[2] 邹敦叙[2] 仲增墉[2] 

机构地区：[1]冶金工业部钢铁研究总院五室,高级工程师北京100081 [2]冶金工业部钢铁研究总院

出　　处：《金属学报》1993年第8期A365-A370,共6页Acta Metallurgica Sinica

摘　　要：本文研究了典型TiAl基合金显微组织在热处理过程中的变化规律及组织与室温拉伸性能间的对应关系结果表明,合金经γ+α双相区处理并控制冷却速度,可获得细小的层片状晶粒和等轴γ晶粒组成的复相组织,此组织室温塑性最佳对显微组织的分析表明。Studies were made of the microstructure variation during heat treatment and the correlation between structure and room temperature tensile properties. The duplex struc- ture, composed of fine lamellar colonies and equiaxial γgrians, with superior room tempera- ture plasticity may be obtained by heat treatment at γ+α phase zone with controlled cooling rate. It is believed that its plasticity is resulted from fine grained structure and higher volume fraction of lamellar colonies.

关 键 词：钛基合金 热处理 拉伸试验 

分 类 号：TG166.5[金属学及工艺—热处理]