16Cr3NiWMoVNbE渗碳淬火组织与热物理力学性能的数值模拟  

Simulation of Carburizing Quenched Microstructure and Thermo-physical Mechanical Properties for 16Cr3NiWMoVNbE Steel

作　　者：谢成 朱戈阳 寻丹 肖政兵 丁志敏 Xie Cheng;Zhu Geyang;Xun Dan;Xiao Zhengbing;Ding Zhimin(China National South Aviation Industry Co., Ltd, Zhuzhou 412002, China;Zhnzbou CRRC times electric Co., Ltd., Zhuzhou 412001, China;Light Alloy Research Institute, Central South University, Changsha 410083, China)

机构地区：[1]中国航发南方工业有限公司,湖南株洲412002 [2]株洲中车时代电气股份有限公司,湖南株洲412001 [3]中南大学轻合金研究院,湖南长沙410083

出　　处：《湖南科技大学学报（自然科学版）》2018年第1期78-83,共6页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家重点基础研究发展计划(973)资助项目(2014CB046702)

摘　　要：基于JMatPro软件,模拟计算了4种不同含碳量的16Cr3NiWMoVNbE钢的渗碳淬火组织演变,研究分析了合金的平衡相组成,热物理、力学性能参数,连续转变曲线（CCT）以及Jominy淬透性曲线.研究结果表明,随着碳含量逐渐增加至0.76%,合金A1和A3温度降低715.97和760.00℃,而淬火组织中的渗碳体含量增多至4.67%,合金淬火末端的抗拉强度、屈服强度与洛氏硬度分别强化为2 350.12 MPa,2 193.62 MPa,61.87,这3种力学性能在距离淬火端面4-9 cm有最大降幅.合金中铁素体（F）、珠光体（P）、贝氏体（B）、马氏体（M）的转变温度均随着碳含量的增加分别从850.0,779.4,469.2,361.9℃降至727.4,760.4,431.4,193.9℃.The thermo-physical and mechanical properties, phase composition, CCT curves and hardenability curves for four carbon levels 16Cr3NiWMoVNbE Steel were simulated and researched by the JMatPro. The results show that the temperature of A1 and A3 drops to 715. 97 ℃ and 760 ℃ with the carbon levels reduce to 0.76%,and the cementite levels in the quenched microstructure improve to 4.67%,the tensile strength,yield strength and Rokwell hardness of the quenching end are 2 350.12 MPa,2 193.62 MPa and 61.87,the three kinds of mechanical properties in the 4 - 9 cm to the quenching end has the largest decline. In addition,the phase transition temperature of ferrite,pearlite,bainite,martensite respectively decrease from 850. 0 m,779. 4,469.2,361.9 ℃ to 727.4,760.4,431.4,193.9 ℃ with the improvement of carbon levels.

关 键 词：16Cr3NiWMoVNbE钢 热物理性能 CCT曲线 JMatPro 

分 类 号：TG156.3[金属学及工艺—热处理] TG161[金属学及工艺—金属学]