改性纳米TiN粉末对ZGMn18Cr2微观组织和力学性能的影响  

Research on the Microstructure and Mechanical Properties of ZGMn18Cr2 Strengthen by Modified TiN Nano-Powders

作　　者：喻惠武[1] 王文焱[1] 谢敬佩[1] 周平安 李炎[1] 王嘉希[3] 张芬红 邵星海[1] 

机构地区：[1]河南科技大学,河南洛阳471003 [2]中国农机研究院,北京100083 [3]河南大学,河南开封475004 [4]合肥开尔纳米能源科技股份有限公司,安徽合肥230088

出　　处：《铸造》2012年第5期471-473,共3页Foundry

基　　金：河南省科技攻关项目(084300510006);河南科技大学博士基金项目;河南科技大学实验开发基金(SY0708053;SY0910056);河南科技大学校基金项目(2007ZY044)

摘　　要：在生产条件下,采用氩气吹入法制备了改性纳米TiN粉末强化ZGMn18Cr2样品。研究了不同纳米TiN添加量对ZGMn18Cr2样品显微组织和力学性能的影响。结果表明:经改性纳米TiN粉末强化处理后的超高锰钢的组织明显细化;当TiN加入量为0.03%时,硬度和冲击吸收功分别提高了6.0%和14%。SEM和TEM分析表明,TiN以微米级和纳米级的颗粒存在于奥氏体基体中,起到了细化晶粒,强韧化基体的作用。The ZGMn18Cr2 samples reinforced by surface modified TiN nano-powders were prepared under industrial conditions by argon method.The mechanical properties and microstructure of ZGMn18Cr2 samples with different contents of TiN nano-powders were investigated.The results show that the microstructure of superhigh manganese steel strengthen by modified TiN nano-powders was refined obviously;with 0.03% TiN addition,the hardness and impact absorbing energy were increased by 6.0% and 14%,respectively.SEM and TEM analyses show that the micron and nano TiN particles exist in austenitic matrix,which refine grains and strengthen the matrix.

关 键 词：纳米TiN粉体 超高锰钢 力学性能 微观组织 

分 类 号：TG131[一般工业技术—材料科学与工程]