【摘 要】
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The as-cast microstructure,mechanical properties and casting fluidity of ZA84 alloy containing TiC were investigated.The experimental results indicate that addi
【机 构】
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Materials Science & Engineering College,Chongqing Institute of Technology,Chongqing 400050,China;Mat
【出 处】
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武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
The as-cast microstructure,mechanical properties and casting fluidity of ZA84 alloy containing TiC were investigated.The experimental results indicate that adding 0.5wt%TiC to ZA84 alloy can refine the as-cast microstructure,and do not cause the formation of any new phase.After 0.5wt%TiC was added to the ZA84 alloy,the morphology of tary phases on the grain boundaries changed from coarse quasi-continuous net to fine disconnected net,and the distribution of tary phases became dispersive and homogeneous.At the same time,the tensile properties of ZA84+0.5TiC alloy at room temperature were comparable to those of AZ91D alloy,and were higher than those of ZA84 alloy.At 150 ℃,the tensile and creep properties of ZA84+0.5TiC alloy were also higher than those of ZA84 and AZ91D alloys.In addition,compared with the AZ91D alloy,the casting fluidity of ZA84+0.5TiC alloy was slightly poor,but better than that of ZA84 alloy.The reason could be related to the effect of TiC on the solidification temperature range of ZA84 alloy.
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