Hydrogen embrittlement properties of 7075 and 6061 aluminum alloys in humid air
Hydrogen embrittlement properties of 7075 and 6061 aluminum alloys in humid air
复制标题
7075和6061铝合金在潮湿空气中的氢脆性能
DOI：
10.2464/jilm.56.721
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Y. Sasaki
中科院分区：
文献类型：
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作者：
Shuhei Osaki;J. Ikeda;K. Kinoshita;Y. Sasaki
针对高压氢气容器内衬材料6061-T6和7075-T6铝合金，在相对湿度为90%的湿空气中进行了慢应变速率试验（SSRT），以评价其氢脆敏感性，揭示氢环境辅助开裂（HEAC）过程。7075-T6显示出对HE的显著敏感性，导致晶间开裂，而相比之下，6061-T6显示出作为内衬材料所需的优异抗性。7075-T6钢的HEAC过程为：第一阶段微裂纹起源于试样表面的Al-Fe-（Cu）相夹杂物，然后发展为沿晶裂纹。6061-T6合金不会产生微裂纹，这主要是由于析出相组织的存在，氢强化的滑移变形局部化程度较低。
For 6061-T6 and 7075-T6 aluminum alloys as candidate liner materials for high-pressure hydrogen container, SSRT (slow strain-rate technique) tests in humid air with 90% relative humidity were carried out to evaluate the susceptibility to hydrogen embrittlement (HE) and to reveal the process of HEAC (hydrogen-environment -assisted cracking). 7075-T6 showed a significant susceptibility to HE, resulting in intergranular cracking, while in contrast, 6061-T6 exhibited an excellent resistance required as liner materials. HEAC of 7075-T6 is confirmed to progress as follows; at the first stage micro-cracks originate at inclusions of Al–Fe–(Cu) phase on the specimen surface and then advance to intergranular cracking. 6061-T6 would not give rise to micro-cracks because of less localization of slip deformation enhanced by hydrogen effects, mainly due to the precipitation microstructure.
铝镁硅合金在空气中的环境脆化
DOI：
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发表时间：
2005
期刊：
Journal of JILM 55-10
影响因子：
--
作者：
M.ANDOH;K.ASAKURA;M.KANNO
通讯作者：
M.KANNO