摘要
研究了Ti-6A1-4V(TC4)钛合金经不同温度和时间离子渗氮后渗层的表面硬度、深度和显微组织。结果表明,在H2∶N2比为3∶1的气氛中经860～900℃、8～10 h离子渗氮后,渗层深度为0.20～0.25 mm,表面硬度为900～1341 HV0.1,渗层组织由δ-TiN、ε相和氮在α+β内的固溶体组成。
The surface hardness, case depth and microstructure of Ti-6A1-4V （TC4） titanium alloy after ion nitriding at different temperatures for defferent time were investigated. The results show that after the alloy is ion nitrided at 860 - 900 ℃ for 8 - 10 h in an atmosphere consisting of 3 parts of hydrogen and 1 part of nitrogen, the depths of case are 0.20 - 0.25 mm, the surface hardnesses are 900 - 1341 HV0. 1, and the mierostructure composes of δ-TIN, ε-phase and solid solution of nitrogen in α＋β.
出处
《热处理》
CAS
2013年第2期39-41,共3页
Heat Treatment
关键词
钛合金
离子渗氮
渗氮层
titanium alloy
ion nitriding
nitrided case
