Hall-Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys

Yutaka S. Sato; Mitsunori Urata; Hiroyuki Kokawa; Keisuke Ikeda

doi:10.1016/S0921-5093(03)00008-X

Hall-Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys

Yutaka S. Sato, Mitsunori Urata, Hiroyuki Kokawa, Keisuke Ikeda

ENG - Materials Processing

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

329 Citations (Scopus)

Abstract

The effect of grain size on hardness in the stir zones of friction stir (FS) welds of equal channel angular (ECA)-pressed Al alloys 1050 and 5083 was examined. The hardness was found to be essentially related to grain size through the Hall-Petch relationship in the stir zone of Al alloy 1050. The k _H slope of the Hall-Petch equation for the stir zone of Al alloy 1050 was different from the previously reported ones, which was attributed to dynamic recrystallisation during friction stir welding (FSW). On the other hand, the relationship between hardness and grain size in the stir zone of Al alloy 5083 was expressed by the Hall-Petch equation with a change in slope. The change in slope was attributed to the homogeneous distribution of many fine particles.

Original language	English
Pages (from-to)	298-305
Number of pages	8
Journal	Materials Science and Engineering A
Volume	354
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(03)00008-X
Publication status	Published - 2003 Aug 15

Keywords

Aluminium alloys
Equal channel angular pressing
Friction stir welding
Hall-Petch relationship
Ultrafine-grained microstructure

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S0921-5093(03)00008-X

Cite this

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title = "Hall-Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys",

abstract = "The effect of grain size on hardness in the stir zones of friction stir (FS) welds of equal channel angular (ECA)-pressed Al alloys 1050 and 5083 was examined. The hardness was found to be essentially related to grain size through the Hall-Petch relationship in the stir zone of Al alloy 1050. The k H slope of the Hall-Petch equation for the stir zone of Al alloy 1050 was different from the previously reported ones, which was attributed to dynamic recrystallisation during friction stir welding (FSW). On the other hand, the relationship between hardness and grain size in the stir zone of Al alloy 5083 was expressed by the Hall-Petch equation with a change in slope. The change in slope was attributed to the homogeneous distribution of many fine particles.",

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author = "Sato, {Yutaka S.} and Mitsunori Urata and Hiroyuki Kokawa and Keisuke Ikeda",

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T1 - Hall-Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys

AU - Sato, Yutaka S.

AU - Urata, Mitsunori

AU - Kokawa, Hiroyuki

AU - Ikeda, Keisuke

PY - 2003/8/15

Y1 - 2003/8/15

N2 - The effect of grain size on hardness in the stir zones of friction stir (FS) welds of equal channel angular (ECA)-pressed Al alloys 1050 and 5083 was examined. The hardness was found to be essentially related to grain size through the Hall-Petch relationship in the stir zone of Al alloy 1050. The k H slope of the Hall-Petch equation for the stir zone of Al alloy 1050 was different from the previously reported ones, which was attributed to dynamic recrystallisation during friction stir welding (FSW). On the other hand, the relationship between hardness and grain size in the stir zone of Al alloy 5083 was expressed by the Hall-Petch equation with a change in slope. The change in slope was attributed to the homogeneous distribution of many fine particles.

AB - The effect of grain size on hardness in the stir zones of friction stir (FS) welds of equal channel angular (ECA)-pressed Al alloys 1050 and 5083 was examined. The hardness was found to be essentially related to grain size through the Hall-Petch relationship in the stir zone of Al alloy 1050. The k H slope of the Hall-Petch equation for the stir zone of Al alloy 1050 was different from the previously reported ones, which was attributed to dynamic recrystallisation during friction stir welding (FSW). On the other hand, the relationship between hardness and grain size in the stir zone of Al alloy 5083 was expressed by the Hall-Petch equation with a change in slope. The change in slope was attributed to the homogeneous distribution of many fine particles.

KW - Aluminium alloys

KW - Equal channel angular pressing

KW - Friction stir welding

KW - Hall-Petch relationship

KW - Ultrafine-grained microstructure

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IS - 1-2

ER -

Hall-Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys

Abstract

Keywords

ASJC Scopus subject areas

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