Electron microscopy characterization of the weld line zones of an inertia friction welded superalloy

Ze Huang; Hang Li; G Baxter; S Bray; Paul Bowen

doi:10.1016/j.jmatprotec.2011.06.019

Electron microscopy characterization of the weld line zones of an inertia friction welded superalloy

Ze Huang, Hang Li, G Baxter, S Bray, Paul Bowen

Metallurgy and Materials

Research output: Contribution to journal › Article

25 Citations (Scopus)

Abstract

Microstructure in the weld line (WL) zone produced by inertial friction welding has been studied for a series of RR1000-RR1000 welds using transmission electron and scanning electron microscopy. A fully recrystallised fine grain structure was found to form throughout the WL zone, characterized by straight and smooth grain boundaries, high energy status and modified grain boundary chemistry due to very fast cooling after welding. Very fine gamma' particles with unimodal size distribution were reprecipitated in the WL zone. The fine gamma' particles are spherical in shape, high in number density and characterized by an imbalanced chemistry, containing less Al, Ti, Ni, Ta gamma'-forming elements but more Cr, Co, Mo gamma-forming elements than all types of parent gamma' particles. As a result, a hard and strong WL zone was produced by the inertial friction welding. (C) 2011 Elsevier BM. All rights reserved.

Original language	English
Pages (from-to)	1927-1936
Number of pages	10
Journal	Journal of Materials Processing Technology
Volume	211
Issue number	12
DOIs	https://doi.org/10.1016/j.jmatprotec.2011.06.019
Publication status	Published - 1 Dec 2011

Keywords

Friction welding
Nickel based superalloys
Hardening
Electron microscopy

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10.1016/j.jmatprotec.2011.06.019

Structural Metallic Systems For Advanced Gas Turbine Applications
Bowen, P., Chiu, Y. & Reed, R.
Engineering & Physical Science Research Council
1/10/09 → 30/09/14
Project: Research Councils

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title = "Electron microscopy characterization of the weld line zones of an inertia friction welded superalloy",

abstract = "Microstructure in the weld line (WL) zone produced by inertial friction welding has been studied for a series of RR1000-RR1000 welds using transmission electron and scanning electron microscopy. A fully recrystallised fine grain structure was found to form throughout the WL zone, characterized by straight and smooth grain boundaries, high energy status and modified grain boundary chemistry due to very fast cooling after welding. Very fine gamma' particles with unimodal size distribution were reprecipitated in the WL zone. The fine gamma' particles are spherical in shape, high in number density and characterized by an imbalanced chemistry, containing less Al, Ti, Ni, Ta gamma'-forming elements but more Cr, Co, Mo gamma-forming elements than all types of parent gamma' particles. As a result, a hard and strong WL zone was produced by the inertial friction welding. (C) 2011 Elsevier BM. All rights reserved.",

keywords = "Friction welding, Nickel based superalloys, Hardening, Electron microscopy",

author = "Ze Huang and Hang Li and G Baxter and S Bray and Paul Bowen",

year = "2011",

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doi = "10.1016/j.jmatprotec.2011.06.019",

language = "English",

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TY - JOUR

T1 - Electron microscopy characterization of the weld line zones of an inertia friction welded superalloy

AU - Huang, Ze

AU - Li, Hang

AU - Baxter, G

AU - Bray, S

AU - Bowen, Paul

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Microstructure in the weld line (WL) zone produced by inertial friction welding has been studied for a series of RR1000-RR1000 welds using transmission electron and scanning electron microscopy. A fully recrystallised fine grain structure was found to form throughout the WL zone, characterized by straight and smooth grain boundaries, high energy status and modified grain boundary chemistry due to very fast cooling after welding. Very fine gamma' particles with unimodal size distribution were reprecipitated in the WL zone. The fine gamma' particles are spherical in shape, high in number density and characterized by an imbalanced chemistry, containing less Al, Ti, Ni, Ta gamma'-forming elements but more Cr, Co, Mo gamma-forming elements than all types of parent gamma' particles. As a result, a hard and strong WL zone was produced by the inertial friction welding. (C) 2011 Elsevier BM. All rights reserved.

AB - Microstructure in the weld line (WL) zone produced by inertial friction welding has been studied for a series of RR1000-RR1000 welds using transmission electron and scanning electron microscopy. A fully recrystallised fine grain structure was found to form throughout the WL zone, characterized by straight and smooth grain boundaries, high energy status and modified grain boundary chemistry due to very fast cooling after welding. Very fine gamma' particles with unimodal size distribution were reprecipitated in the WL zone. The fine gamma' particles are spherical in shape, high in number density and characterized by an imbalanced chemistry, containing less Al, Ti, Ni, Ta gamma'-forming elements but more Cr, Co, Mo gamma-forming elements than all types of parent gamma' particles. As a result, a hard and strong WL zone was produced by the inertial friction welding. (C) 2011 Elsevier BM. All rights reserved.

KW - Friction welding

KW - Nickel based superalloys

KW - Hardening

KW - Electron microscopy

U2 - 10.1016/j.jmatprotec.2011.06.019

DO - 10.1016/j.jmatprotec.2011.06.019

M3 - Article

VL - 211

SP - 1927

EP - 1936

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

IS - 12

ER -

Electron microscopy characterization of the weld line zones of an inertia friction welded superalloy

Abstract

Keywords

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Structural Metallic Systems For Advanced Gas Turbine Applications

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