Hydrogen emission at grain boundaries in tensile-deformed Al-9%Mg alloy by hydrogen microprint technique  

基于氢微缩技术拉伸变形Al-9%Mg合金的晶界氢析出(英文)

作　　者：Ryoto KOYAMA Goroh ITOH 

机构地区：[1]School of Science and Engineering, Ibaraki University [2]College of Engineering, Ibaraki University

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第7期2102-2106,共5页中国有色金属学报（英文版）

摘　　要：In recently years, environmental problems, such as global warming and exhaustion of fossil fuels, have grown into serious problems. In the automakers, the development of the fuel cell vehicles using hydrogen as clean energy has been paid attention to. Aluminum alloys have already been applied to a liner material of a high-pressure hydrogen tank for fuel cell vehicles. However, the behavior of hydrogen in aluminum alloys has not been clearly elucidated yet. Therefore, it is necessary to analyze the hydrogen behavior in aluminum alloys. Hydrogen microprint technique （HMPT） has been known as an effective measure to investigate the hydrogen behavior. In the present study, the emission behavior of internal hydrogen on a tensile-deformed Al-9%Mg alloy was investigated bv HMPT at room temoerature. As a result, the hydrogen was emitted at some grain boundaries.近年来,诸如全球变暖、化石燃料枯竭等环境问题日趋严重。发展使用氢作为清洁能源的燃料电池汽车,受到了汽车制造商的广泛重视。铝合金已经应用到燃料汽车的高压氢气槽的衬垫材料中。然而,氢在铝合金中的反应仍然没有得到清楚的阐明。因此,有必要分析氢在铝合金中的反应。氢缩影技术(HMPT)一直被视为一种探讨铝合金中氢行为的有效措施。目前,在室温下采用HMPT技术研究了拉伸变形Al-9%Mg合金内部氢析出的过程,发现氢在一些晶界处析出。

关 键 词：aluminum-magnesium alloy internal hydrogen hydrogen microprint technique grain boundary 

分 类 号：TG146.21[一般工业技术—材料科学与工程]