【摘要】：以精鍛M42噴射成形高速鋼為原料,通過熱處理正交試驗,優(yōu)化了材料熱處理工藝,并分析了不同熱處理制度下材料顯微組織、硬度、抗彎強(qiáng)度及碳化物的演變規(guī)律。結(jié)果顯示,最佳熱處理工藝為:淬火保溫溫度1180℃,回火溫度540℃,回火3次,每次1 h。該工藝下,M42洛氏硬度達(dá)到67.2 HRC,抗彎強(qiáng)度達(dá)到3115 MPa。淬火保溫溫度通過控制M_6C型碳化物的溶解量,影響最終碳化物的尺寸。淬火溫度為1190℃時,M_6C型碳化物充分溶解,回火過程碳化物均勻彌散析出。
[Abstract]:The heat treatment process of precision forging M42 spray formed high speed steel was optimized by orthogonal test of heat treatment. The evolution of microstructure, hardness, bending strength and carbides were analyzed under different heat treatment conditions. The results show that the optimum heat treatment process is as follows: quenching temperature 1180 鈩，

本文編號：2160216