Effect of Mo additions on microstructure and tensile behavior of a Co-Al-W-Ta-B alloy at room temperature

G. Feng; H. Li; S. S. Li; J. B. Sha

doi:10.1016/j.scriptamat.2012.06.013

Effect of Mo additions on microstructure and tensile behavior of a Co-Al-W-Ta-B alloy at room temperature

G. Feng
, H. Li
, S. S. Li
, J. B. Sha^*

^*Corresponding author for this work

Beihang University

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

68 Scopus citations

Abstract

Phase constitutions, microstructures and room-temperature tensile behavior of Mo-doped Co-9Al-(9 - x)W-2Ta-0.02B-xMo alloys (where x = 0, 2, 4, 6, 9 at.%) are investigated. After aging treatment, the microstructure is composed of γ matrix and nanoscale cuboidal γ′ precipitates, with Mo contents of 0-4 at.%; however, a needle-like cellular κ-Co ₃Mo phase is additionally found in the γ′/γ microstructure, with Mo contents of 6-9 at.%. The pure γ′/γ microstructure exhibits better room-temperature tensile strength and elongation than the γ/γ′/κ microstructure.

Original language	English
Pages (from-to)	499-502
Number of pages	4
Journal	Scripta Materialia
Volume	67
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2012.06.013
State	Published - Sep 2012

Keywords

Co-Al-W-based alloys
Ductility
Intermetallic compound
Polyphase microstructure
Tension test

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10.1016/j.scriptamat.2012.06.013

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title = "Effect of Mo additions on microstructure and tensile behavior of a Co-Al-W-Ta-B alloy at room temperature",

abstract = "Phase constitutions, microstructures and room-temperature tensile behavior of Mo-doped Co-9Al-(9 - x)W-2Ta-0.02B-xMo alloys (where x = 0, 2, 4, 6, 9 at.\%) are investigated. After aging treatment, the microstructure is composed of γ matrix and nanoscale cuboidal γ′ precipitates, with Mo contents of 0-4 at.\%; however, a needle-like cellular κ-Co 3Mo phase is additionally found in the γ′/γ microstructure, with Mo contents of 6-9 at.\%. The pure γ′/γ microstructure exhibits better room-temperature tensile strength and elongation than the γ/γ′/κ microstructure.",

keywords = "Co-Al-W-based alloys, Ductility, Intermetallic compound, Polyphase microstructure, Tension test",

author = "G. Feng and H. Li and Li, \{S. S.\} and Sha, \{J. B.\}",

year = "2012",

month = sep,

doi = "10.1016/j.scriptamat.2012.06.013",

language = "英语",

volume = "67",

pages = "499--502",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

number = "5",

}

TY - JOUR

T1 - Effect of Mo additions on microstructure and tensile behavior of a Co-Al-W-Ta-B alloy at room temperature

AU - Feng, G.

AU - Li, H.

AU - Li, S. S.

AU - Sha, J. B.

PY - 2012/9

Y1 - 2012/9

N2 - Phase constitutions, microstructures and room-temperature tensile behavior of Mo-doped Co-9Al-(9 - x)W-2Ta-0.02B-xMo alloys (where x = 0, 2, 4, 6, 9 at.%) are investigated. After aging treatment, the microstructure is composed of γ matrix and nanoscale cuboidal γ′ precipitates, with Mo contents of 0-4 at.%; however, a needle-like cellular κ-Co 3Mo phase is additionally found in the γ′/γ microstructure, with Mo contents of 6-9 at.%. The pure γ′/γ microstructure exhibits better room-temperature tensile strength and elongation than the γ/γ′/κ microstructure.

AB - Phase constitutions, microstructures and room-temperature tensile behavior of Mo-doped Co-9Al-(9 - x)W-2Ta-0.02B-xMo alloys (where x = 0, 2, 4, 6, 9 at.%) are investigated. After aging treatment, the microstructure is composed of γ matrix and nanoscale cuboidal γ′ precipitates, with Mo contents of 0-4 at.%; however, a needle-like cellular κ-Co 3Mo phase is additionally found in the γ′/γ microstructure, with Mo contents of 6-9 at.%. The pure γ′/γ microstructure exhibits better room-temperature tensile strength and elongation than the γ/γ′/κ microstructure.

KW - Co-Al-W-based alloys

KW - Ductility

KW - Intermetallic compound

KW - Polyphase microstructure

KW - Tension test

UR - https://www.scopus.com/pages/publications/84864279401

U2 - 10.1016/j.scriptamat.2012.06.013

DO - 10.1016/j.scriptamat.2012.06.013

M3 - 文章

AN - SCOPUS:84864279401

SN - 1359-6462

VL - 67

SP - 499

EP - 502

JO - Scripta Materialia

JF - Scripta Materialia

IS - 5

ER -

Effect of Mo additions on microstructure and tensile behavior of a Co-Al-W-Ta-B alloy at room temperature

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