孙书刚,高颖超,李徐,李娜,葛熔熔,朱昱,汪兴兴

• 1:南通理工学院机械工程学院
• 2:南通大学机械工程学院

摘要(Abstract)：

首先将1～2 mm的ZTA(ZrO_2增韧Al_2O_3)颗粒、高铬铸铁(HCCI)粉末和粘结剂混合并压制，随后在真空下烧结制备出蜂窝状预制体，最后将高铬铸铁液浇注到预制体中制备出了ZTA颗粒增强高铬铸铁(ZTAp/HCCI)复合材料。将复合材料在940、980、1020和1060℃下淬火，确定最佳淬火温度后分别在220、320、420和520℃下回火，研究了不同热处理工艺对复合材料微观组织及三体磨料磨损性能的影响。结果表明：复合材料经1020℃淬火+420℃回火后的高铬铸铁基体组织最佳，为回火马氏体、残留奥氏体、共晶碳化物及二次碳化物，柱状区和复合区基体硬度最高为63.03和55.95 HRC,三体磨损试验累计体积损失最小为120.28 mm~3,复合材料耐磨性能与热处理后高铬铸铁基体硬度正相关。

关键词(KeyWords)： ZrO_2增韧Al_2O_3;高铬铸铁;复合材料;热处理;三体磨料磨损

Abstract:

Keywords:

基金项目(Foundation): 江苏省重点研发计划项目(BE2021065);; 南通市基础科学研究计划(JC2021192,JCZ21108);; 江苏高校优势学科建设工程资助项目(PAPD);; 江苏省大学生创新创业训练计划(202112056043T)

作者(Author): 孙书刚,高颖超,李徐,李娜,葛熔熔,朱昱,汪兴兴

DOI: 10.13289/j.issn.1009-6264.2022-0084

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