The hot forging behaviour and its effects on the oxidation behaviour of W-Cr alloy

Yunping Li; Peng Li; Huakang Bian; Ning Tang; Yuichiro Koizumi; Akihiko Chiba

doi:10.1016/j.corsci.2014.03.005

The hot forging behaviour and its effects on the oxidation behaviour of W-Cr alloy

Yunping Li, Peng Li, Huakang Bian, Ning Tang, Yuichiro Koizumi, Akihiko Chiba

New Industry Creation Hatchery Center (NICHe)

Tohoku University

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

8 Citations (Scopus)

Abstract

For the first time, hot compression of a sintered W-20Cr-20Mo-1.5Pd alloy was performed to improve oxidation resistance. Residual pores in as-sintered alloy were hypothesized to be eliminated through sliding of the viscous Pd-Cr-containing grain boundary during compression at 10^-4s^-1 and 1350°C, which increased the alloy's oxidation resistance. Because of sufficient Cr from the Pd-Cr phase near the grain boundary after hot compression, Cr could transfer more efficiently into the Cr-depleted zone, and therefore, the oxide film/matrix interface was much stronger and showed fewer interfacial cracks than the as-sintered alloy did.

Original language	English
Pages (from-to)	367-374
Number of pages	8
Journal	Corrosion Science
Volume	83
DOIs	https://doi.org/10.1016/j.corsci.2014.03.005
Publication status	Published - 2014 Jun

Keywords

A. Alloy
C. Interfaces
C. Oxidation

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10.1016/j.corsci.2014.03.005

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title = "The hot forging behaviour and its effects on the oxidation behaviour of W-Cr alloy",

abstract = "For the first time, hot compression of a sintered W-20Cr-20Mo-1.5Pd alloy was performed to improve oxidation resistance. Residual pores in as-sintered alloy were hypothesized to be eliminated through sliding of the viscous Pd-Cr-containing grain boundary during compression at 10-4s-1 and 1350°C, which increased the alloy's oxidation resistance. Because of sufficient Cr from the Pd-Cr phase near the grain boundary after hot compression, Cr could transfer more efficiently into the Cr-depleted zone, and therefore, the oxide film/matrix interface was much stronger and showed fewer interfacial cracks than the as-sintered alloy did.",

keywords = "A. Alloy, C. Interfaces, C. Oxidation",

author = "Yunping Li and Peng Li and Huakang Bian and Ning Tang and Yuichiro Koizumi and Akihiko Chiba",

note = "Funding Information: The authors gratefully acknowledge the financial support given by ISHIFUKU Metal Industry Co., Ltd. and the Ministry of Education, Culture, Sports, Science and Technology of Japan through the Regional Innovation Cluster Program 2010. The authors also acknowledge I. Narida of Institute for Materials Research, Tohoku University, for assistance with the EPMA examinations.",

year = "2014",

month = jun,

doi = "10.1016/j.corsci.2014.03.005",

language = "English",

volume = "83",

pages = "367--374",

journal = "Corrosion Science",

issn = "0010-938X",

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T1 - The hot forging behaviour and its effects on the oxidation behaviour of W-Cr alloy

AU - Li, Yunping

AU - Li, Peng

AU - Bian, Huakang

AU - Tang, Ning

AU - Koizumi, Yuichiro

AU - Chiba, Akihiko

N1 - Funding Information: The authors gratefully acknowledge the financial support given by ISHIFUKU Metal Industry Co., Ltd. and the Ministry of Education, Culture, Sports, Science and Technology of Japan through the Regional Innovation Cluster Program 2010. The authors also acknowledge I. Narida of Institute for Materials Research, Tohoku University, for assistance with the EPMA examinations.

PY - 2014/6

Y1 - 2014/6

N2 - For the first time, hot compression of a sintered W-20Cr-20Mo-1.5Pd alloy was performed to improve oxidation resistance. Residual pores in as-sintered alloy were hypothesized to be eliminated through sliding of the viscous Pd-Cr-containing grain boundary during compression at 10-4s-1 and 1350°C, which increased the alloy's oxidation resistance. Because of sufficient Cr from the Pd-Cr phase near the grain boundary after hot compression, Cr could transfer more efficiently into the Cr-depleted zone, and therefore, the oxide film/matrix interface was much stronger and showed fewer interfacial cracks than the as-sintered alloy did.

AB - For the first time, hot compression of a sintered W-20Cr-20Mo-1.5Pd alloy was performed to improve oxidation resistance. Residual pores in as-sintered alloy were hypothesized to be eliminated through sliding of the viscous Pd-Cr-containing grain boundary during compression at 10-4s-1 and 1350°C, which increased the alloy's oxidation resistance. Because of sufficient Cr from the Pd-Cr phase near the grain boundary after hot compression, Cr could transfer more efficiently into the Cr-depleted zone, and therefore, the oxide film/matrix interface was much stronger and showed fewer interfacial cracks than the as-sintered alloy did.

KW - A. Alloy

KW - C. Interfaces

KW - C. Oxidation

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DO - 10.1016/j.corsci.2014.03.005

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VL - 83

SP - 367

EP - 374

JO - Corrosion Science

JF - Corrosion Science

ER -

The hot forging behaviour and its effects on the oxidation behaviour of W-Cr alloy

Abstract

Keywords

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