Discovery and characterization of a new Mo0.6Re0.4 phase in a Re-containing superalloy

Liwu Jiang; Dongxu Kou; Xintian Wang; Chihang Jiang; Yu Yang; Shusuo Li

doi:10.1016/j.jallcom.2025.181285

Discovery and characterization of a new Mo_0.6Re_0.4 phase in a Re-containing superalloy

Liwu Jiang^*
, Dongxu Kou
, Xintian Wang
, Chihang Jiang
, Yu Yang
, Shusuo Li

^*Corresponding author for this work

Research institute of Aero-Engine

University of Science and Technology Beijing

Research output: Contribution to journal › Letter › peer-review

2 Scopus citations

Abstract

Re element has garnered significant interest due to it can significantly enhance mechanical properties of single crystal superalloys. However, the mechanism is still unclear. The first reported Mo_0.6Re_0.4 new phase in this study provides critical insights for revealing the strengthening mechanism. This phase has a body-centered cubic (bcc) structure, distributed around the primary γ′ phase. High-throughput in-situ characterization demonstrated its content below 0.15 %. It's hard to distinguish and may be easily confused since its low concentration and the morphological and compositional characteristics are similar to known TCP phases.

Original language	English
Article number	181285
Journal	Journal of Alloys and Compounds
Volume	1034
DOIs	https://doi.org/10.1016/j.jallcom.2025.181285
State	Published - 25 Jun 2025

Keywords

Focused ion beam (FIB)
High-throughput in-situ characterization
IC21
Microstructure
NiAl-based superalloy

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10.1016/j.jallcom.2025.181285

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title = "Discovery and characterization of a new Mo0.6Re0.4 phase in a Re-containing superalloy",

abstract = "Re element has garnered significant interest due to it can significantly enhance mechanical properties of single crystal superalloys. However, the mechanism is still unclear. The first reported Mo0.6Re0.4 new phase in this study provides critical insights for revealing the strengthening mechanism. This phase has a body-centered cubic (bcc) structure, distributed around the primary γ′ phase. High-throughput in-situ characterization demonstrated its content below 0.15 \%. It's hard to distinguish and may be easily confused since its low concentration and the morphological and compositional characteristics are similar to known TCP phases.",

keywords = "Focused ion beam (FIB), High-throughput in-situ characterization, IC21, Microstructure, NiAl-based superalloy",

author = "Liwu Jiang and Dongxu Kou and Xintian Wang and Chihang Jiang and Yu Yang and Shusuo Li",

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year = "2025",

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T1 - Discovery and characterization of a new Mo0.6Re0.4 phase in a Re-containing superalloy

AU - Jiang, Liwu

AU - Kou, Dongxu

AU - Wang, Xintian

AU - Jiang, Chihang

AU - Yang, Yu

AU - Li, Shusuo

PY - 2025/6/25

Y1 - 2025/6/25

N2 - Re element has garnered significant interest due to it can significantly enhance mechanical properties of single crystal superalloys. However, the mechanism is still unclear. The first reported Mo0.6Re0.4 new phase in this study provides critical insights for revealing the strengthening mechanism. This phase has a body-centered cubic (bcc) structure, distributed around the primary γ′ phase. High-throughput in-situ characterization demonstrated its content below 0.15 %. It's hard to distinguish and may be easily confused since its low concentration and the morphological and compositional characteristics are similar to known TCP phases.

AB - Re element has garnered significant interest due to it can significantly enhance mechanical properties of single crystal superalloys. However, the mechanism is still unclear. The first reported Mo0.6Re0.4 new phase in this study provides critical insights for revealing the strengthening mechanism. This phase has a body-centered cubic (bcc) structure, distributed around the primary γ′ phase. High-throughput in-situ characterization demonstrated its content below 0.15 %. It's hard to distinguish and may be easily confused since its low concentration and the morphological and compositional characteristics are similar to known TCP phases.

KW - Focused ion beam (FIB)

KW - High-throughput in-situ characterization

KW - IC21

KW - Microstructure

KW - NiAl-based superalloy

UR - https://www.scopus.com/pages/publications/105007064392

U2 - 10.1016/j.jallcom.2025.181285

DO - 10.1016/j.jallcom.2025.181285

M3 - 快报

AN - SCOPUS:105007064392

SN - 0925-8388

VL - 1034

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 181285

ER -

Discovery and characterization of a new Mo_0.6Re_0.4 phase in a Re-containing superalloy

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Keywords

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