The phase composition and microstructure of sm - fe - zr alloy with different amount of zr are analyzed and the effect of zr content on the microstructure of as - cast sm - fe - zr alloy is studied . the results indicate that microstructure of as - cast sm - fe - zr alloy is improved obviously with 1 . 0at % zr added , and that the long - time high temperature homogenization is unnecessary for the alloys with this microstructure . by this way , the purpose of the research to decrease the cost of preparation and optimize process is achieved 分析了不同zr含量的sm - fe - zr合金的相組成和微結(jié)構(gòu),研究了zr含量對(duì)鑄態(tài)組織的影響,結(jié)果表明,添加1 . 0at的zr可以明顯改善合金的鑄態(tài)組織,從而可以避免昂長(zhǎng)的高溫均勻化退火過程,取得了降低制造成本和優(yōu)化工藝的效果。