Damage process in commercially pure α-titanium alloy without (Ti40) and with (Ti40-H) hydrides
Damage process in commercially pure α-titanium alloy without (Ti40) and with (Ti40-H) hydrides
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不含 (Ti40) 和含有 (Ti40-H) 氢化物的商业纯 α-钛合金的损伤过程
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
M. Clavel
中科院分区：
文献类型：
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作者：
J. Huez;A. Helbert;X. Feaugas;I. Guillot;M. Clavel
研究了静水应力和氢含量对α钛合金损伤过程的影响。特别是实验确定了空位、空穴成核判据、空穴成核和空穴生长动力学。用Gurson-Tvergaard模型讨论了孔洞的形核、长大速率和断裂过程。主要结果是空穴生长速率不受氢化物夹杂物的影响，与空穴形核动力学相反。在Ti40中，形核过程的影响小于生长过程，生长过程涉及断裂。相反，对于Ti40-H，生长过程可以忽略不计，形核动力学是断裂的主要原因。
The influence of hydrostatic stress and hydrogen content on damage process was investigated in α-titanium alloy. In particular, void site, void nucleation criterion, void nucleation, and void growth kinetics were experimentally determined. Void nucleation and growth rates and fracture process have been discussed using a Gurson-Tvergaard model. The main result is that void growth rate is not affected by hydride inclusions contrary to the void nucleation kinetic. In Ti40, the nucleation process has less influence than the growth process, which involves fracture. On the contrary, with regard to Ti40-H, the growth process is negligible and the nucleation kinetics, which is predominant, is the main cause of fracture.