摘要
本文对稀土硅铁、钒铁、钛铁的不同加入量对高铬合金白口铸铁性能的影响进行了实验研究。结果表明，当稀土硅铁的加入量为１．２～１．５％时，冲击韧性达到最大值，硬度也有提高。稀土硅铁孕育可以显著改善碳化物的形态和分布，细化基体组织。当加入量为０．９～１．５％时，大部分碳化物断网，呈孤立状态分布。钒铁的加入量为０．２％时，即可起到明显的孕育作用，机械性能得到提高。
A comparative tensile test was made by means of the electronic tensile tester in the specimens of CuZnAl alloys with trace Y and Nd and without RE. The results show that the trace RE elements obviously improve the tensile strength and extension of the alloys , meanwhite maintain its original shape memory effect. The grain sizes were reduced a little from metallographic examination. The fracture appearances of specimens were also examined with SEM. The tough fracture and intergranular fracture was observed in the specimens with and without RE, respectively.
出处
《稀土》
EI
CAS
CSCD
北大核心
1997年第1期33-36,40,共5页
Chinese Rare Earths
