The effect of Ni3(Cr0.2W0.4Ti0.4) particles with DO22 structure on the deformation mode and mechanical properties of the aged Ni-Cr-W-Ti alloy

Xiangyu Gao; Rui Hu; Jieren Yang

doi:10.1016/j.scriptamat.2018.04.029

The effect of Ni₃(Cr_0.2W_0.4Ti_0.4) particles with DO₂₂ structure on the deformation mode and mechanical properties of the aged Ni-Cr-W-Ti alloy

Xiangyu Gao, Rui Hu, Jieren Yang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

15 Scopus citations

Abstract

It has been found that the DO₂₂ Ni₃(Cr_0.2W_0.4Ti_0.4) particles play a dominant role in improving the strength of the aged Ni-Cr-W-Ti superalloy. The precipitation of DO₂₂ phase also changed the preferred deformation mode from slip in the as-solutionized alloy into twinning in the aged alloy. Strengthening of the aged superalloy has been determined to be based on shearing mechanism to achieve high cutting stress which is required for partial dislocations to cut through coherent DO₂₂ precipitates and thus produce plastic deformation, resulting in a dramatic increase in yield strength of the aged superalloy.

Original language	English
Pages (from-to)	44-48
Number of pages	5
Journal	Scripta Materialia
Volume	153
DOIs	https://doi.org/10.1016/j.scriptamat.2018.04.029
State	Published - Aug 2018

Keywords

Deformation twinning
Nanoscale DO precipitates
Ni-Cr-W-Ti alloy
Partial dislocations
Transmission electron microscopy

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10.1016/j.scriptamat.2018.04.029

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title = "The effect of Ni3(Cr0.2W0.4Ti0.4) particles with DO22 structure on the deformation mode and mechanical properties of the aged Ni-Cr-W-Ti alloy",

abstract = "It has been found that the DO22 Ni3(Cr0.2W0.4Ti0.4) particles play a dominant role in improving the strength of the aged Ni-Cr-W-Ti superalloy. The precipitation of DO22 phase also changed the preferred deformation mode from slip in the as-solutionized alloy into twinning in the aged alloy. Strengthening of the aged superalloy has been determined to be based on shearing mechanism to achieve high cutting stress which is required for partial dislocations to cut through coherent DO22 precipitates and thus produce plastic deformation, resulting in a dramatic increase in yield strength of the aged superalloy.",

keywords = "Deformation twinning, Nanoscale DO precipitates, Ni-Cr-W-Ti alloy, Partial dislocations, Transmission electron microscopy",

author = "Xiangyu Gao and Rui Hu and Jieren Yang",

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T1 - The effect of Ni3(Cr0.2W0.4Ti0.4) particles with DO22 structure on the deformation mode and mechanical properties of the aged Ni-Cr-W-Ti alloy

AU - Gao, Xiangyu

AU - Hu, Rui

AU - Yang, Jieren

PY - 2018/8

Y1 - 2018/8

N2 - It has been found that the DO22 Ni3(Cr0.2W0.4Ti0.4) particles play a dominant role in improving the strength of the aged Ni-Cr-W-Ti superalloy. The precipitation of DO22 phase also changed the preferred deformation mode from slip in the as-solutionized alloy into twinning in the aged alloy. Strengthening of the aged superalloy has been determined to be based on shearing mechanism to achieve high cutting stress which is required for partial dislocations to cut through coherent DO22 precipitates and thus produce plastic deformation, resulting in a dramatic increase in yield strength of the aged superalloy.

AB - It has been found that the DO22 Ni3(Cr0.2W0.4Ti0.4) particles play a dominant role in improving the strength of the aged Ni-Cr-W-Ti superalloy. The precipitation of DO22 phase also changed the preferred deformation mode from slip in the as-solutionized alloy into twinning in the aged alloy. Strengthening of the aged superalloy has been determined to be based on shearing mechanism to achieve high cutting stress which is required for partial dislocations to cut through coherent DO22 precipitates and thus produce plastic deformation, resulting in a dramatic increase in yield strength of the aged superalloy.

KW - Deformation twinning

KW - Nanoscale DO precipitates

KW - Ni-Cr-W-Ti alloy

KW - Partial dislocations

KW - Transmission electron microscopy

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DO - 10.1016/j.scriptamat.2018.04.029

M3 - 文章

AN - SCOPUS:85046803803

SN - 1359-6462

VL - 153

SP - 44

EP - 48

JO - Scripta Materialia

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ER -

The effect of Ni₃(Cr_0.2W_0.4Ti_0.4) particles with DO₂₂ structure on the deformation mode and mechanical properties of the aged Ni-Cr-W-Ti alloy

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