標題: Irreversible phase transformation in a CoCrFeMnNi high entropy alloy under hydrostatic compression
作者: Huang, E-Wen
Lin, Chih-Ming
Jain, Jayant
Shieh, Sean R.
Wang, Ching-Pao
Chuang, Yu-Chun
Liao, Yen-Fa
Zhang, Dong-Zhou
Tony Huang
Tu-Ngoc Lam
Woo, Wanchuck
Lee, Soo Yeol
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Synchrotron x-ray diffraction;Metal and alloys;Phase transformation;Microstructure;High entropy alloy
公開日期: 1-Mar-2018
摘要: An equal-molar CoCrFeMnNi, face-centered-cubic high-entropy alloy system is investigated using in-situ angular-dispersive X-ray diffraction under hydrostatic compression up to 20 GPa via diamond anvil cell. The evolutions of multiple diffraction peaks are collected simultaneously to elucidate the phase stability field. The results indicated that an irreversible phase transformation had occurred in the high entropy alloy upon decompression to ambient pressure. A reference material (n-type silicon-doped gallium arsenide) was investigated following the same protocol to demonstrate the different deformation mechanisms. It is suggested that the atomic bonding characteristics on the phase stability may play an important role in the high entropy alloys.
URI: http://dx.doi.org/10.1016/j.mtcomm.2017.12.001
http://hdl.handle.net/11536/147867
ISSN: 2352-4928
DOI: 10.1016/j.mtcomm.2017.12.001
期刊: MATERIALS TODAY COMMUNICATIONS
Volume: 14
起始頁: 10
結束頁: 14
Appears in Collections:Articles