文章编号：1004-0609(2010)S1-s0624-03
Ti-6Al-4V合金棒材α层厚度的测定
(宝鸡钛业股份有限公司，宝鸡 721014)
摘 要: 钛材表面形成的氧化层是由钛的氧化物(TiO2)和α层两部分组成的。讨论了用金相法测定TC4合金棒材的α层厚度时，加热温度、加热时间与α层厚度的关系，采用扩散方程对该试验数据进行了校对验算。从而得出：在成品生产工序中，TC4合金棒材的α层厚度一般不超过0.15 mm。
关键字: 金相法；α层厚度；Ti-6Al-4V合金
Determination of α-layer thickness for Ti-6Al-4V alloy bar
（Baoji Titanium Industry Co., Ltd., Baoji 721014, China）
Abstract:The oxide layer on titanium and titanium alloys during heating is made of titanium dioxide and α-layer. The relationship among the heating temperature, heating time and α-layer thickness of Ti-6Al-4V alloy bars was determined by metallographical testing method. Then, the results were corrected by diffusion equaiton. The result shows that the α-layer thickness is less than 0.15 mm when the final products are heated.
Key words: metallographical method; α-layer thickness; Ti-6Al-4V alloy
