ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2013, Vol. 34 ›› Issue (5): 68-70.

所属专题: 模具钢

• 组织和性能 • 上一篇    

Mg对热作模具钢H13组织和力学性能的影响

王亮亮1,李晶1,李勇勇1,宁博1,谭兵2,陈雪梅2,张波2   

  1. 1. 北京科技大学钢铁冶金新技术国家重点实验室,冶金与生态工程学院,北京100083;
    2. 广州市冶金工业研究所,广州510440;
  • 收稿日期:2013-05-06 出版日期:2013-10-01 发布日期:2022-09-22
  • 作者简介:王亮亮(1982-),男,博士研究生(北京科技大学),2006年河北理工大学毕业,模具钢新品种的开发和研究
  • 基金资助:
    高等学校博士学科点专项科研基金资助(No. 20100006110020)

Effect of Mg on Structure and Mechanical Properties of Hot-Working-Die Steel H13

Wang Liangliang1 , Li Jing1 ,  Li Yongyong1 ,  Ning Bo1 , Tan Bing2 ,  Cheng Xuemei2 , Zhang Bo2   

  1. 1. State Key Laboratory of Advanced Metallurgy, School of Metallurgy and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2. Guangzhou Institute of Metallurgy Industry, Guangzhou 510440;
  • Received:2013-05-06 Published:2013-10-01 Online:2022-09-22

摘要: 试验钢的生产流程为2 t中频感应炉-200 kg电渣重熔(Φ180 mm)-退火-镦粗至Φ325 mm-球化退火-1050℃淬火-590℃回火,炉冷。试验研究了0~0.0010%Mg对热作模具钢H13(/%:0.40~0.41C、0.98~1.01Si、0.29Mn、4.95~5.08Cr、1.21~1.22Mo、0.91-0.93V、0.023~0.027P、0.006~0.007S)组织和力学性能的影响。结果表明,随钢中Mg含量由0提高至0.0010%时,试验模具钢H13的平均抗拉强度和HRC硬度值分别从1 617.6 MPa和45.7提高至1 702.9 MPa和47.8;Mg可以增加钢中回火马氏体的稳定性,高温回火后含Mg模具钢H13的组织中出现大量回火屈氏体,而且部分碳化物在Mg-Al夹杂物周围析出,成球形,尺寸小于10μm,有利于改善钢的性能。

关键词: Mg, 热作模具钢H13, 组织, 强度, 硬度

Abstract: The production flow sheet for test steel is 2 t medium frequency induction furnace-200 kg ESR (Φ180 mm) -annealing-upset forging to Φ325 mm-spheroidal annealing-quenching at 1050 ℃-tempering at 590 ℃,furnace cooling. The effect of 0 - 0.001 0% Mg on structure and mechanical properties of hot-working-die steel H13 (/% : 0.40-0.41C, 0.98-1.01Si, 0.29Mn, 4.95-5.08Cr, 1.21-1.22Mo, 0.91-0.93V, 0.023-0.027P, 0.006-0.007S) has been tested and studied. Results show that with increasing Mg content in steel from 0 to 0. 0010% , the average tensile strength and HRC value of test die steel H13 increases respectively from 1617.6 MPa and 45.7 to 1702.9 MPa and 47.8 ; Mg is available to increase the stability of tempered martensite in steel, in high temperature tempered die steel H13 containing Mg, a lot of tempering troostite occurs in structure and partial globular carbides with size less than 10 μm precipitate around Mg-Al inclusions, it is favourable to improvement of performance of steel.

Key words: Mg, Hot-Working Die Steel H13, Structure, Tensile Strength, Hardness