Identification and Characterization of Intercritical Heat-Affected Zone in As-Welded Grade 91 Weldment

Yiyu Wang; Rangasayee Kannan; Leijun Li

doi:10.1007/s11661-016-3736-8

Identification and Characterization of Intercritical Heat-Affected Zone in As-Welded Grade 91 Weldment

Yiyu Wang, Rangasayee Kannan, Leijun Li

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

27 Scopus citations

Abstract

A metallurgical method is proposed for locating the intercritical heat-affected zone in the as-welded Grade 91 steel. New austenitic grains, preferentially formed along the original prior austenite grain boundaries, are characterized to contain finer M₂₃C₆ carbides and higher strain levels than the original prior austenite grains. Kurdjumov–Sachs Group 1 variant pairs, with a low misorientation of 7 deg within a martensitic block, are identified as the dominant variants in the new PAGs.

Original language	English
Pages (from-to)	5680-5684
Number of pages	5
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	47
Issue number	12
DOIs	https://doi.org/10.1007/s11661-016-3736-8
State	Published - Dec 1 2016
Externally published	Yes

Funding

The authors acknowledge the support by NSERC of Canada through a Discovery grant (RES0020431).

Funders	Funder number
Natural Sciences and Engineering Research Council of Canada	RES0020431

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10.1007/s11661-016-3736-8

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abstract = "A metallurgical method is proposed for locating the intercritical heat-affected zone in the as-welded Grade 91 steel. New austenitic grains, preferentially formed along the original prior austenite grain boundaries, are characterized to contain finer M23C6 carbides and higher strain levels than the original prior austenite grains. Kurdjumov–Sachs Group 1 variant pairs, with a low misorientation of 7 deg within a martensitic block, are identified as the dominant variants in the new PAGs.",

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AB - A metallurgical method is proposed for locating the intercritical heat-affected zone in the as-welded Grade 91 steel. New austenitic grains, preferentially formed along the original prior austenite grain boundaries, are characterized to contain finer M23C6 carbides and higher strain levels than the original prior austenite grains. Kurdjumov–Sachs Group 1 variant pairs, with a low misorientation of 7 deg within a martensitic block, are identified as the dominant variants in the new PAGs.

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ER -

Identification and Characterization of Intercritical Heat-Affected Zone in As-Welded Grade 91 Weldment

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