复合变质对ZL101合金力学性能的影响  

Effects of Composite Modification on the Mechanical Properties of ZL101 Alloy

作　　者：李慧[1] 张静武[1] 缑慧阳[1] 靳小秋 刘春海 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室 [2]戴卡轮毂制造有限公司

出　　处：《特种铸造及有色合金》2007年第10期810-812,共3页Special Casting & Nonferrous Alloys

基　　金：河北省自然科学基金项目(599244)

摘　　要：用Al-5Ti-1B和Al-9Sr中间合金对ZL101合金进行复合变质处理。试验结果表明,复合变质与Sr变质相比,合金综合力学性能明显提高;从断口及断口金相的SEM图像上可以看出,复合变质处理后,共晶Si相的形态和分布有显著改善,断裂单元细小,断口上的韧性部分增多,这是综合力学性能提高的主要原因。The ZL101 alloy was modified by means of Al-5Ti-1B and Al-9Sr master alloy. Compared with Sr modification, the Al-5Ti-1B and Al-9Sr master alloy composite modification can remarkably improve the comprehensive mechanical properties of the ZL101 alloy. The fracture SEM observation reveals that the grain size of eutectic Si in compositely modified alloy is greatly refined with more distribution, and the unit of fracture become smaller and the ductile zone is increased, which can be responsible for the improvement of mechanical properties of ZL101 alloy.

关 键 词：ZLl01合金 复合变质 力学性能 断口金相 

分 类 号：TG115[金属学及工艺—物理冶金]