向Ti—6A1—4V合金中加入不同量的氢并进行断裂韧性和常规拉伸试验。结果表明,氢含量小于490ppm时,对上述性能沒有很大的影响。尽管在氢含量高时确实会发生承载开裂,但在氢含量小于490ppm时,持续承载20小时却对断裂抗力无影响。尽管如此,在透射电镜的研究中仍发现,氢浓度超过225ppm时,在承载裂纹顶端的前缘发生应变诱发氢化物沉淀。 Different amounts of hydrogen were added to the Ti-6Al-4V alloy for fracture toughness and conventional tensile tests. The results show that the hydrogen content of less than 490ppm, the above performance did not have a significant impact. Although load cracking does occur at high hydrogen content, sustained loading for 20 hours at hydrogen contents of less than 490 ppm has no effect on fracture resistance. Despite this, it has been found in transmission electron microscopy studies that strain-induced hydride precipitation occurs at the leading edge of the bearing crack tip at hydrogen concentrations in excess of 225 ppm.