Slip and fracture behavior of δ-Ni3Nb plates in a polycrystalline nickel-based superalloy during fatigue

Yun Wu; Shuangming Li; Maodong Kang; Yunting Li; Yahui Liu; Haiyan Gao; Baode Sun; Jun Wang

doi:10.1016/j.scriptamat.2019.06.013

Slip and fracture behavior of δ-Ni₃Nb plates in a polycrystalline nickel-based superalloy during fatigue

Yun Wu, Shuangming Li, Maodong Kang, Yunting Li, Yahui Liu, Haiyan Gao, Baode Sun, Jun Wang

School of Materials Sience and Engineering

Shanghai Jiao Tong University

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

14 Scopus citations

Abstract

The fatigue deformation behavior of δ-Ni₃Nb (D0_a intermetallic phase in nickel-based superalloy) was analyzed in detail to determine its fracture characteristics and possible slip systems. Strong arrangement-dependence (i.e. arrangement direction of plate length relative to loading direction) deformation characteristics were observed. When δ plates were arranged not paralleling to the loading direction, they exhibited certain degree of fatigue resistance. Slip traces were found in the non-parallel δ plates after some fatigue cycles. By analyzing the traces and habit plane of δ, the possible operative slip systems were confirmed to be (010)_δ[100]_δ and (010)_δ[102]_δ.

Original language	English
Pages (from-to)	36-41
Number of pages	6
Journal	Scripta Materialia
Volume	171
DOIs	https://doi.org/10.1016/j.scriptamat.2019.06.013
State	Published - Oct 2019

Keywords

Crystal structure
Fatigue
Fracture
Slip
δ-NiNb

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10.1016/j.scriptamat.2019.06.013

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title = "Slip and fracture behavior of δ-Ni3Nb plates in a polycrystalline nickel-based superalloy during fatigue",

abstract = "The fatigue deformation behavior of δ-Ni3Nb (D0a intermetallic phase in nickel-based superalloy) was analyzed in detail to determine its fracture characteristics and possible slip systems. Strong arrangement-dependence (i.e. arrangement direction of plate length relative to loading direction) deformation characteristics were observed. When δ plates were arranged not paralleling to the loading direction, they exhibited certain degree of fatigue resistance. Slip traces were found in the non-parallel δ plates after some fatigue cycles. By analyzing the traces and habit plane of δ, the possible operative slip systems were confirmed to be (010)δ[100]δ and (010)δ[102]δ.",

keywords = "Crystal structure, Fatigue, Fracture, Slip, δ-NiNb",

author = "Yun Wu and Shuangming Li and Maodong Kang and Yunting Li and Yahui Liu and Haiyan Gao and Baode Sun and Jun Wang",

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T1 - Slip and fracture behavior of δ-Ni3Nb plates in a polycrystalline nickel-based superalloy during fatigue

AU - Wu, Yun

AU - Li, Shuangming

AU - Kang, Maodong

AU - Li, Yunting

AU - Liu, Yahui

AU - Gao, Haiyan

AU - Sun, Baode

AU - Wang, Jun

PY - 2019/10

Y1 - 2019/10

N2 - The fatigue deformation behavior of δ-Ni3Nb (D0a intermetallic phase in nickel-based superalloy) was analyzed in detail to determine its fracture characteristics and possible slip systems. Strong arrangement-dependence (i.e. arrangement direction of plate length relative to loading direction) deformation characteristics were observed. When δ plates were arranged not paralleling to the loading direction, they exhibited certain degree of fatigue resistance. Slip traces were found in the non-parallel δ plates after some fatigue cycles. By analyzing the traces and habit plane of δ, the possible operative slip systems were confirmed to be (010)δ[100]δ and (010)δ[102]δ.

AB - The fatigue deformation behavior of δ-Ni3Nb (D0a intermetallic phase in nickel-based superalloy) was analyzed in detail to determine its fracture characteristics and possible slip systems. Strong arrangement-dependence (i.e. arrangement direction of plate length relative to loading direction) deformation characteristics were observed. When δ plates were arranged not paralleling to the loading direction, they exhibited certain degree of fatigue resistance. Slip traces were found in the non-parallel δ plates after some fatigue cycles. By analyzing the traces and habit plane of δ, the possible operative slip systems were confirmed to be (010)δ[100]δ and (010)δ[102]δ.

KW - Crystal structure

KW - Fatigue

KW - Fracture

KW - Slip

KW - δ-NiNb

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U2 - 10.1016/j.scriptamat.2019.06.013

DO - 10.1016/j.scriptamat.2019.06.013

M3 - 文章

AN - SCOPUS:85067889040

SN - 1359-6462

VL - 171

SP - 36

EP - 41

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Slip and fracture behavior of δ-Ni₃Nb plates in a polycrystalline nickel-based superalloy during fatigue

Abstract

Keywords

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