论文部分内容阅读
用透射电镜(TEM)研究了一种试验超高强度高韧性不锈钢Fe 14Cr 12Co 5Mo Me超细化组织。研究得出,淬火时M体板条被小M体片簇[011]切截再细化;回火时形成的逆转变奥氏体 (Ar)切截M体板条束和板条使其再细化,Ar体与M体基体取向符合K S关系[011-]A //[111]M, (11-1-)A //(11-0)M。切截形成的超细化M体板条和Ar体向M体相变塑性是试验钢强 韧化的重要机理。
A ultrahigh-strength, ultra-high-strength and high-toughness Fe 14Cr 12Co 5Mo Me was investigated by transmission electron microscopy (TEM). The results show that the quenched M-body slab is cut and refined by the small M-body cluster [011]; the reverse-transformed austenite (Ar) formed during tempering cuts the M-shaped slab and slats Further refinement, Ar and M body matrix orientation consistent KS relationship [011-] A // [111] M, (11-1-) A // (11-0) M. The cut and formed superfine M body slab and Ar body to M phase transformation plasticity is the important mechanism of the toughness of the test steel.