研究了等原子比NiAl合金和NiAl-25Cr,NiAl-20.4Fe-Y,Ce,NiAl-30Fè-Y合金的超塑性行为及其变形机制.结果表明,几种合金在一定条件下均表现出超塑性行为.单相NiAl超塑性变形源于变形过程中所发生的动态回复及再结晶.两相及多相NiAl合金的超塑性变形机制则是晶粒的转动和界面的滑动
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