金属橡胶用冷拉拔奥氏体不锈钢丝的微观组织  

Microstructure of Cool-Drawing Austenitic Stainless Steel Wires Used for Metal Rubber

作　　者：董秀萍[1] 刘国权[1] 杨建春[2] 白鸿柏[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]军械工程学院火炮工程系,石家庄050003

出　　处：《航空材料学报》2007年第6期35-39,共5页Journal of Aeronautical Materials

基　　金：总装备部预先研究项目(51312040405)

摘　　要：利用OM(光学显微镜)、SEM(扫描电镜)、TEM(透射电镜)和EBSD(电子背散射衍射)等技术,对金属橡胶用冷拉拔奥氏体不锈钢丝的微观组织进行研究。结果表明,钢丝由α′相的形变诱发马氏体与残余奥氏体相组成,马氏体相的亚结构为孪晶和位错,而残余奥氏体晶粒被细化到微米尺度。同时研究发现了钢丝在拉拔方向上形成的以第二相硬质颗粒为核心的梭形微孔洞。进一步研究分析后认为,Cr17-N i7系奥氏体不锈钢丝更适合制备高阻尼的金属橡胶材料。By the means of OM, SEM, TEM and EBSD, the microstructures of cool-drawing austenitic stainless steel wires used for metal rubber were studied. The results showed that the microstructures of this steel wires were made up of α′ martensite phase, presen- ting twin and dislocation substructures, and residual austenite phase which was refined into micron dimension. The results also presented that there were so many shuttle-shaped micro holes in this steel wires, lugging along drawing axis and cored by the hard particles second-phase. The further investigation indicates that the Cr17-Ni7 cool-drawing austenitic stainless steel wires were more applicable to use for the high-damp metal rubber.

关 键 词：冷拉拔 奥氏体不锈钢丝 形变马氏体 梭形微孔洞 

分 类 号：TG142.71[一般工业技术—材料科学与工程]