The effect of ordering on the hydrogen embrittlement susceptibility of Ni2Cr
The effect of ordering on the hydrogen embrittlement susceptibility of Ni2Cr
复制标题
有序化对Ni2Cr氢脆敏感性的影响
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
C. Miller
中科院分区：
文献类型：
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作者：
B. Berkowitz;C. Miller
从 900 °C 快速淬火后，在 500 °C 下进行不同时间的等温退火会导致 Ni2Cr 中出现不同程度的有序化。无序和有序 Ni2Cr 拉伸试样在拉伸试验之前和拉伸试验期间要经历氢脆和非脆化环境。氢脆敏感性通过失效后面积损失减少（RA 损失）来确定。拉伸试验结果表明，无序合金和高度有序合金最容易发生氢脆。 RA损失在每种情况下是大约70 pct。测试显示对氢脆的最小敏感性在 40% 到 50% 之间。通过扫描电子显微镜检查的样品断裂表面表明，脆化程度与晶间破坏的数量相关。 Ni2Cr 的失效机制似乎取决于合金的老化程度。
Isothermal annealing at 500 °C for various lengths of time after rapid quenching from 900 °C results in different degrees of ordering in Ni2Cr. Tensile specimens of disordered and ordered Ni2Cr were subjected to hydrogen embrittling and nonembrittling environments before and during tensile testing. The hydrogen embrittlement susceptibility was determined by reduction-in-area losses (RA loss) after failure. The results of the tensile tests indicated that the disordered alloy and highly ordered alloy were the most susceptible to hydrogen embrittlement. The RA loss in each case was approximately 70 pct. The tests revealed a minimum susceptibility to hydrogen embrittlement between 40 and 50 pct order. The fracture surfaces of the specimens, as examined by scanning electron microscopy, showed that the extent of embrittlement is correlated with the amount of intergranular failure. The mechanisms for failure in Ni2Cr appear to depend upon the extent of aging in the alloy.