摘要
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,200,450,730?g/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。
The effects of absorbed hydrogen on behavior of NZ2 zirconium alloy （Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr, in wt% designated as NZ2） were investigated. The sheet specimens were hydrided with different hydrogen contents： unhydrided （original hydrogen content）, 200, 450 and 730μg/g H and tested at room temperature and 375 ℃, respectively. The results show that dynamic strain ageing （DSA） can be observed during cyclic deformation of NZ2 alloy at 375 ℃. Even if the hydriding content is up to 730 μg/g it has no influence on DSA. Hydrogen can improve the fatigue life of NZ2 alloy at 375 ℃ and cause the cyclic softening.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2012年第9期1531-1534,共4页
Rare Metal Materials and Engineering
基金
NSFC(50571083)
National High-Tech Research and Development Projects“863”(2008AA031071)
关键词
锆合金
低周疲劳
氢化物
zirconium alloy
low cycle fatigue
hydride
