Double HCP Phase in Cobalt Alloys with Dilute Contents of Iron
Double HCP Phase in Cobalt Alloys with Dilute Contents of Iron
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稀铁钴合金中的双 HCP 相
DOI：
10.1143/jpsj.37.687
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
T. Wakiyama
中科院分区：
文献类型：
--
作者：
T. Onozuka;S. Yamaguchi;M. Hirabayashi;T. Wakiyama
本文用X射线衍射、电子显微镜和热容测量等方法研究了含铁量小于8at%的钴合金的晶体结构和相变。在1.5 ~ 4.8at%Fe范围内，室温下发现α-La型双hcp结构，而在0.7 ~ 0.9at%Fe范围内，随着温度的升高，合金由hcp → dhcp → fcc转变。在dhcp相在2at%Fe的堆垛层错能估计为约18 erg/cm 2从电子显微镜观察扩展位错节点，这个值同意以及从量热数据的评估。
The crystal structure and the phase transformation of cobalt alloys containing less than 8 at% Fe have been investigated by means of X-ray diffraction, electron microscopy and heat capacity measurements. A double hcp structure of the α-La type is found in the range 1.5 to 4.8 at% Fe at room temperature and the alloys of 0.7 to 0.9 at% Fe transform from hcp through dhcp to fcc with increasing temperature. The stacking fault energy in the dhcp phase at 2 at% Fe is estimated to be about 18 erg/cm 2 from electron microscopic observation of extended dislocation nodes, and this value agrees well with an evaluation from calorimetric data.