【摘要】 本文研究了轻、重稀土对奥氏体锰钢中非金属夹杂物类型、形态与分布的影响。实验结果表明稀土可以使奥氏体锰钢中的非金属夹杂物变小、变圆且弥散分布。加 Ti-Fe 孕育处理,可以使奥氏体锰钢的晶粒度细化1～2级以上,从而改善了夹杂物的分布。因此显著地提高了中锰钢的冲击韧性,冲击值可达到80J/cm~2(u 型缺口)以上。更多还原

【Abstract】 The effects of light and heavy tare earths on the inclusion type,size,shape,and distribution in the austenitic manganese sted has been studied.the test results in dicate that inoculation by rare earths enables the inclusions in austenitic manganese steel to change into small size,ball shape and be distributed dispersively,wheneas the titanium may fine austenite grain size by 1-2 grade and improve the inclusium distribution.As a resuk the impa(?) toughness of the asutenitic medium manganese steal is remarkably increased and up to 80J / cm~2 or.more(U notched).更多还原