Deformation mechanisms in a new disc superalloy at low and intermediate temperatures
Deformation mechanisms in a new disc superalloy at low and intermediate temperatures
复制标题
DOI：
10.1016/j.scriptamat.2012.03.042
复制
发表时间：
2012-07
影响因子：
6
通讯作者：
Yong Yuan;Yuefeng Gu;T. Osada;Z. Zhong;T. Yokokawa;H. Harada
中科院分区：
文献类型：
--
作者：
Yong Yuan;Yuefeng Gu;T. Osada;Z. Zhong;T. Yokokawa;H. Harada
用透射电镜研究了一种新型盘形高温合金TMW-4 M3在25 ~ 725°C温度范围内的变形组织。在25°C时，位错对切割是主要机制，而在650和725°C时，层错和形变孪晶分别是主要机制。讨论了影响变形机制转变的因素。含平面缺陷的变形过程可提高TMW-4 M3在中温下的屈服强度。
The deformation microstructures of a new disc superalloy, TMW-4M3, have been investigated by transmission electron microscopy at temperatures ranging from 25 to 725°C. Dislocation pairs cutting was the dominant mechanism at 25°C, whereas stacking faults and deformation twinning were the main mechanisms at 650 and 725°C, respectively. The factors that affect the transition of deformation mechanisms are discussed. The deformation processes involving planar defects may enhance the yield strength of TMW-4M3 at intermediate temperatures.