加热保温时间对5CrMnMo钢机械性能的影响机理  

INFLUENTIAL MECHANISM OF HOLDING TIME ON MECHANICAL PROPERTIES OF 5CrMnMo

作　　者：孙岚[1] 葛长路[1] 

机构地区：[1]郑州大学机械与电气工程系,中国矿业大学

出　　处：《郑州大学学报（自然科学版）》1997年第4期48-51,共4页Journal of Zhengzhou University (Natural Science)

摘　　要：研究了５ＣｒＭｎＭｏ热模钢９００℃强韧化处理时加热保温时间对机械性能的影响．试验表明，５ＣｒＭｎＭｏ热模钢９００℃加热保温６０ｍｉｎ左右淬火组织中针状马氏体和板条束中的孪晶区明显减少，当其在５２０℃下回火３ｈ时可获得最佳的综合机械性能，这不但超过传统工艺而且优于复合等温处理工艺．,Influence of holding time on the mechanical properties of hot die steel 5CrMnMo is studied when strengthening and malleablizing treated at 900℃.Tests show that when samples are heated, quenched at 900℃,and then held 60 minutes or so, acicular martensite and the twin zone in pure lath martensite in the structure decrease apparently. When these samples are tempered 3h at 520℃,they can possess optimal and combined mechanical property. Comparatively speaking, this technology is superior not only to traditional technologies but also to compound isothermal treatment technology.

关 键 词：机械性能 保温时间 热处理 热模钢 强韧化 

分 类 号：TG161[金属学及工艺—热处理] TG142.33[金属学及工艺—金属学]