不同水基淬火介质对ZG30CrMnSiMo低合金钢组织和耐磨性的影响  

Effect of different water-based quenching media on microstructure and wear resistance of ZG30CrMnSiMo low alloy steel

作　　者：武兆洋 平宪忠 郑宝超 易艳良 李卫 Wu Zhaoyang;Ping Xianzhong;Zheng Baochao;Yi Yanliang;Li Wei(Institute of Advanced Wear and Corrosion Kesistant and P'unctional Materials,Jinan University,Guangzhou Guangdong 510000,China;National Joint Engineering Research Center of High Performance Metal Wear Kesistant Materials Technology,Jinan University,Guangzhou Guangdong 510000,China;Linyi Tiankuo Casting Co.,Ltd.,Linyi Shandong 276000,China)

机构地区：[1]暨南大学先进耐磨蚀及功能材料研究院,广东广州510000 [2]暨南大学高性能金属耐磨材料技术国家地方联合工程研究中心,广东广州510000 [3]临沂天阔铸造有限公司,山东临沂276000

出　　处：《金属热处理》2021年第5期60-65,共6页Heat Treatment of Metals

基　　金：国家重点研发计划(2017YFB0305100);中央高校基本科研业务费(21620344);广东省科技计划(2017B090903005);广州市科技计划(201806040006);广东省基础与应用基础研究基金(2021A1515010523)。

摘　　要：通过扫描电镜、冲击试验机和动载冲击磨料磨损试验机等对低合金耐磨钢显微组织、力学性能和耐磨性能进行了分析。结果表明:铸态组织由珠光体和碳化物组成,铸态合金的宏观硬度为41.3 HRC,冲击吸收能量为6.1 J,磨损量为1.4378 g。经水玻璃(Na_(2)SiO_(3))和PAG淬火后,显微组织均转变为回火板条马氏体和碳化物,宏观硬度分别为49.0 HRC和51.1 HRC,冲击吸收能量分别为7.3 J和9.4 J,磨损量分别为0.9378 g和0.8350 g。相比铸态合金,PAG淬火后合金的宏观硬度、冲击性能和耐磨性分别提高了23.7%、54.1%和1.7倍。相比水玻璃淬火,PAG淬火后合金钢的宏观硬度、冲击性能和耐磨性分别提高了4.3%、28.8%和1.1倍。Microstructure,mechanical properties and wear resistance of low alloy wear resistant steel were analyzed by means of scanning electron microscope,impact testing machine and dynamic load impact abrasive wear testing machine.The results show that the as-cast microstructure consists of pearlite and carbide,of which the macroscopic hardness,the impact absorbed energy and wear loss are 41.3 HRC,6.1 J and 1.4378 g,respectively.And after quenching in sodium silicate(Na_(2)SiO_(3))and PAG,the microstructure of the is both transformed into tempered lath martensite and carbide,of which the macroscopic hardness,the impact absorbed energy and wear loss are 49.0 HRC and 51.1 HRC,7.3 J and 9.4 J,0.9378 g and 0.835 g,respectively.Compared with the as-cast alloy,the macroscopic hardness,impact propekly and wear resistance of the PAG quenched steel are improved by 23.7%,54.1% and 1.7 times,respectively.Compared with quenching in sodium silicate solution,the macroscopic hardness,impact property and wear resistance of the PAG quenched steel are improved by 4.3%,28.8% and 1.1 times,respectively.

关 键 词：水玻璃淬火液 PAG水溶性淬火液 低合金耐磨钢 耐磨性 显微组织 

分 类 号：TG161[金属学及工艺—热处理]