关键词:Cr12MoV; 真空热处理; 组织; 性能中图分类号:TG162.4文献标识码:A文章编号:1001-3814(2012)08-0167-03Research on Microstructure and Properties of Cr12MoV Steel AfterVacuum Heat TreatmentDENG Liping1,2, LUO Junming2, SU Qian3(1. Material Science and Engineering Research Center, Nanchang Hangkong University, Nanchang 330063, China; 2. Schoolof Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China; 3. Analysis and TestingCenter, Nanchang Hangkong University, Nanchang 330063, China)Abstract:After solution and double-refine treatment as preheat treatment and vacuum heat treatment or ordinary heattreatment as final heat treatment, the hardness, impact toughness, bending strength, wear resistance, microstructure andfracture morphology of Cr12MoV steel were studied. The results indicate that with granular carbide evenly distributed inmatrix, the impact toughness, bending strength and wear resistance ofCr12MoV steel after vacuum heat treatment are betterthan those after ordinary heat treatment. After vacuum heat treatment, the impact toughness and bending strength of thesamples reach 8.347 J·cm-2and 1732.6 MPa, respectively. In comparison to the samples with ordinary heat treatment, theyincrease by 57.6% and 16.9%, respectively.Key words:Cr12MoV; vacuum heat treatment; microstructure; properties收稿日 期:2011-07-20基金项目 :江西省材料科学与工程研究中心资助项目 (ZX201001003);南昌市科技攻关项目 (2010 洪财企 95 号)作者简介:邓莉萍(1979- ),女, 江西南城人,讲师,硕士;电话:0791-3863034;E-mail:denglp790331@yahoo.com.cn167 Hot Working Technology 2012, Vol.41 ,No.08