刘健波,张学宾,宋克兴,杨留栓,葛学元

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心
• 3:河南城建学院
• 4:机械科学研究总院

摘要(Abstract)：

对D2钢进行不同处理后,利用OM、SEM和XRD进行了微观组织分析,并测试了硬度与冲击韧性,研究固溶-高温回火球化预处理对D2钢微观组织与性能的影响。结果表明:D2钢经固溶-高温回火处理后碳化物偏析程度明显降低,高温回火时碳和合金元素从过饱和的马氏体基体中析出,均匀聚集长大形成合金碳化物颗粒,改善了基体中碳化物的形态和分布;最佳的预处理工艺参数为780℃回火6 h,经最佳预处理-淬回火后,材料冲击韧性提高了23.8%。

关键词(KeyWords)： D2钢;球化预处理;碳化物;微观组织;冲击韧性

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2016YFB0300400);; 河南省创新型科技团队(C20150014);; 河南省科技攻关计划(国际科技合作)项目(162102410025)

作者(Author): 刘健波,张学宾,宋克兴,杨留栓,葛学元

DOI: 10.13289/j.issn.1009-6264.2017-0510

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