The presence of retained austenite gives rise to deterioration of the wear resistance and fracture strength of Cr-Mo ste......

3Cr2W8V钢制铝合金压铸模经1110℃油淬、720～750℃回火（预备热处理），1090℃奥氏体化、270℃等温淬火和610℃回火2次，使其硬度由27HRC提......