钛合金离子渗氮后的组织及耐磨性能  

Microstructure and wear resistance of ion-nitrided titanium alloy

作　　者：贺瑞军[1] 孙枫[1] 王琳[1] 佟小军[1] 

机构地区：[1]中国航空工业集团公司北京航空材料研究院,北京100095

出　　处：《金属热处理》2016年第4期25-29,共5页Heat Treatment of Metals

摘　　要：对TC4及TA7钛合金分别在900℃进行离子渗氮工艺试验,借助于SEM、XRD等分析了渗层组织,测量了渗氮层显微硬度及渗氮深度,测试了渗氮层的耐磨性能。结果表明,钛合金离子渗氮可形成化合物层+扩散层的典型渗氮层,总渗氮深度可达100μm以上,渗氮层表面硬度达1200 HV0.1以上。TC4钛合金850℃渗氮16 h后,耐磨性能与基体相比显著提高。Ion nitriding test of TC4 and TA7 alloys was carried out at 900 ℃. The microstructure of the nitrided layer was examined by SEM and XRD. The microhardness and the thickness of the nitrided layer were measured. The wear resistance properties of the nitrided layer were tested. The results show that a obtained composite nitrided layer consisted of compound layer and diffused layer,with total thickness about100 μm and surface hardness about 1200 HV0. 1. Wear resistance of the surface is obviously improved after nitriding at 850 ℃ for 16 h.

关 键 词：钛合金 离子渗氮 组织 耐磨性能 

分 类 号：TG156.82[金属学及工艺—热处理]