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Effect of hydrogenation on room temperature compression properties of TB8 titanium alloy
Author(s): 
Pages: 15-18
Year: Issue:  6
Journal: Journal of Plasticity Engineering

Keyword:  热氢处理TB8钛合金组织压缩性能;
Abstract: 通过热氢处理技术在钛合金中引入临时元素氢,可以改变钛合金的相组成,进而改变钛合金的力学性能和加工性能.文章采用压缩实验研究置氢对TB8合金室温压缩性能的影响,并利用OM、XRD和DTA等方法研究固态置氢后TB8钛合金微观组织和相变的演变过程.结果表明,氢降低了TB8合金的β相转变温度,在氢含量为0.7wt%时组织完全转变成β相,置氢后合金中生成了δ氢化物和ω相;氢对TB8合金的塑性影响较小,但由于β相的软化作用,使置氢后合金的屈服强度低于原始合金,应变硬化能力随氢含量的增加而逐渐增强,主要是由氢原子及氢化物对位错的阻碍作用所致.
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