杨闯,马亚芹,王亮.TC4 钛合金真空脉冲渗氧硬化层的组织与性能[J].表面技术,2013,42(3):38-41.
YANG Chuang,MA Ya-qin,WANG Liang.Microstructure and Properties of Vacuum Pulse Oxidation Hardening Layer on TC4 Titanium Alloy[J].Surface Technology,2013,42(3):38-41 |
| TC4 钛合金真空脉冲渗氧硬化层的组织与性能 |
| Microstructure and Properties of Vacuum Pulse Oxidation Hardening Layer on TC4 Titanium Alloy |
| 投稿时间：2013-01-12 修订日期：2013-02-22 |
| DOI： |
| 中文关键词: TC4 钛合金 真空脉冲渗氧 组织 性能 |
| 英文关键词:TC4 titanium vacuum pulse oxidation structure property |
| 基金项目:贵州省科学技术基金项目( 黔科合 J 字[2013]2220 号) |
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| 中文摘要: |
| 采用真空脉冲渗氧的方法,在 TC4 钛合金表面制备了与基体结合良好的硬化层,并对硬化层的组织结构、硬度、脆性等进行了分析。 结果表明:硬化层由表面氧化物层和氧扩散区组成,氧化层中 TiO2 发生了分解,氧向基体内扩散,氧化层主要由 琢-Ti、金红石 TiO2、TiO 及少量 Ti3Al 组成,表层组织致密,表面硬度为 650 ~670 HV,硬化层深度可达 60 ~ 80 μm;此外,由于扩散区氧的固溶强化作用,硬化层的硬度梯度平缓,脆性小。 |
| 英文摘要: |
| A hardened layer possessing good bonding strength with substrate was prepared on the surface of TC4 titanium alloy by a process of vacuum pulse oxidation. The microstructure, hardness and brittleness of hardening layer were analyzed.The results show the hardened layer comprises a surface oxide layer and an oxygen diffusion zone, TiO2of the oxide layer happen to change, oxygen penetrate into the substrate, the phase of oxide layer is composed of 琢-Ti, rutile TiO2, TiO and Ti3Al, surface microstructure appear compact,the surface hardness of the TC4 titanium are 650 ~ 670 HV, the thickness of the hardened layer can reach 60 ~ 80 μm, because of the effect of solid solution strengthening in oxygen diffusion zone, the hardened layer has low brittleness and the hardness gradient of hardened zone is flat . |
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