Dynamic strain aging in a new Ni–Co base superalloy
Dynamic strain aging in a new Ni–Co base superalloy
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DOI：
10.1016/j.scriptamat.2010.11.025
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发表时间：
2011-03
影响因子：
6
通讯作者：
C. Cui;Yuefeng Gu;Yong Yuan;H. Harada
中科院分区：
文献类型：
--
作者：
C. Cui;Yuefeng Gu;Yong Yuan;H. Harada
在室温至6 0 0℃，应变速率为3×10−2~8×10−5s−1的条件下，对新型Ni-Co高温合金TMW2进行了动态应变时效试验。在试验温度和应变速率下，该合金表现出正态和逆态动态应变时效效应。透射电子显微镜的证据表明，由于位错-溶质的动态相互作用，正常行为与常规DSA有关，而相反的行为可能与层错的发生有关。
Dynamic strain aging (DSA) in a newly developed Ni–Co superalloy, TMW-2, was examined at temperatures ranging from room temperature to 600°C and strain rates between 3×10−2and 8×10−5s−1. The alloy exhibited both normal and inverse DSA effects at the temperatures and strain rates tested. Transmission electron microscopy evidence suggests that the normal behavior is associated with conventional DSA due to dynamic dislocation–solute interaction, while the inverse behavior may be related to the occurrence of stacking faults.