TiN纳米陶瓷对ZGMn13微观组织和力学性能影响

Effect of nanoceramic TiN on microstructure and mechanical properties of ZGMn13

为细化ZGMn13的组织,并提升其使用效果。采用TiN纳米陶瓷作为添加剂,以ZGMn13为基体材料,采用吹氩法制备了添加TiN纳米陶瓷的ZGMn13试样,并对试样进行了固溶处理;使用扫描电子显微镜观察了TiN纳米陶瓷对ZGMn13试样微观组织的影响;使用布氏硬度、冲击和磨粒磨损等试验设备,对试样的力学性能、摩擦磨损性能进行测试与研究。结果表明:通过吹氩法加入的TiN纳米陶瓷对ZGMn13的晶粒起到了明显的细化作用,同时组织中的连续网状碳化物也被明显地分散和隔断。添加TiN纳米陶瓷的ZGMn13试样的冲击吸收能量和硬度均有所提升。在试验条件下,添加TiN纳米陶瓷的ZGMn13试样的磨损量降低21.1%,耐磨性明显提高,摩擦磨损性能得到改善。

In order to reduce the risk of heat treatment cracking of ZGMn13 and to enhance its usability.Using TiN nanoceramics as addtive and ZGMn13 as matrix material,ZGMn13 samples with nanoceramics were prepared by argon blowing method,and the samples were treated with solid solution.The effect of TiN nanoceramics on the microstructure of ZGMn13 samples was observed using a scanning electron microscope.The mechanical properties,friction and wear properties of the specimens were analyzed using brinell hardness tester,impact tester and abrasive wear tester for the study.The results showed that TiN nanoceramics added by argon blowing method had a significant refining effect on the grain size of ZGMn13,while the continuous reticulated carbides in the structure are obviously dispersed and partitioned.The impact work and hardness of ZGMn13 specimens with added TiN nanoceramic were enhanced.Under the test conditions,the wear amount of ZGMn13 specimens with TiN nanoceramic added was reduced by 21.1%,and the wear resistance was obviously improved,and the wear properties was improved.