In situ transformation from P phase to μ phase in rhenium-containing single-crystal superalloy during thermal exposure. (4th May 2017)

• Record Type: Journal Article
• Authors: Gao, Shuang; Liu, Zhi-Quan; Cui, Jingping; Zhou, Yizhou; Jin, Tao
• Is Part Of: Philosophical magazine letters. Volume 97:Number 5(2017)
• Page Start: 188
• Page End: 196
• Publication Date: 2017-05-04
• Subjects: Phase transformations -- TEM -- superalloys -- topologically close-packed (TCP) phases; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2017.1311427
• Languages: English
• ISSNs: 0950-0839

Abstract

Abstract: An in situ phase transformation from P to μ in a rhenium-containing superalloy during high-temperature exposure has been investigated by transmission electron microscopy. The orientation relationship between the phases is found as (1–12)μ // (1 0 0)P and [2 4 1]μ // [0 1 1]P . An atomic model of the μ/P interface was built to reveal a perfectly coherent interface with lattice misfits of only 0.421 and 1.098%. Considering the small lattice distortions and the similar elemental composition of the phases, it is concluded that the phase transformation from P to μ is favourable.