研究氢对NZ2新锆合金(Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr)低周疲劳行为的影响规律,采用4种不同氢含量(未渗氢,200,450,730μg/g)的板材试样进行室温和375℃下的低周疲劳试验.结果表明,在375℃下,循环变形时发现了动态应变时效现象,渗氢及氢含量的变化不会影响动态应变时效的发生；氢可以提高375℃下NZ2合金的低周疲劳寿命并且导致氢致循环软化.
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