Modifying Al-7Si-0.35Mg alloys using equal channel angular extrusion

Cheng Yu Chou; Kuan Wen Wang; Sheng Long Lee; Tzu Shun Yang

doi:10.1016/j.matlet.2007.12.024

Modifying Al-7Si-0.35Mg alloys using equal channel angular extrusion

Cheng Yu Chou, Kuan Wen Wang, Sheng Long Lee, Tzu Shun Yang

Graduate Institute of Materials Science and Engineering

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

13 Scopus citations

Abstract

The 356 alloys which are different in the composition of Sr and Fe elements were heavily deformed by equal channel angular extrusion. The large acicular silicon in the unmodified alloy and the Fe-bearing phases act as crack initiators and provide easy paths for fracture. After extruded for 5 passes, the acicular silicon and Fe-bearing phases are obviously refined and rounded, both of which resulted in the higher values of mechanical properties. The elongation is greatly enhanced because the cracks have less opportunity to grow continuously along the boundaries of refined phases. The tensile strengths are also enhanced due to the recrystallized and finer grains.

Original language	English
Pages (from-to)	2469-2472
Number of pages	4
Journal	Materials Letters
Volume	62
Issue number	16
DOIs	https://doi.org/10.1016/j.matlet.2007.12.024
State	Published - 15 Jun 2008

Keywords

Equal channel angular extrusion
Mechanical properties
Metals and alloys

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10.1016/j.matlet.2007.12.024

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title = "Modifying Al-7Si-0.35Mg alloys using equal channel angular extrusion",

abstract = "The 356 alloys which are different in the composition of Sr and Fe elements were heavily deformed by equal channel angular extrusion. The large acicular silicon in the unmodified alloy and the Fe-bearing phases act as crack initiators and provide easy paths for fracture. After extruded for 5 passes, the acicular silicon and Fe-bearing phases are obviously refined and rounded, both of which resulted in the higher values of mechanical properties. The elongation is greatly enhanced because the cracks have less opportunity to grow continuously along the boundaries of refined phases. The tensile strengths are also enhanced due to the recrystallized and finer grains.",

keywords = "Equal channel angular extrusion, Mechanical properties, Metals and alloys",

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T1 - Modifying Al-7Si-0.35Mg alloys using equal channel angular extrusion

AU - Chou, Cheng Yu

AU - Wang, Kuan Wen

AU - Lee, Sheng Long

AU - Yang, Tzu Shun

PY - 2008/6/15

Y1 - 2008/6/15

N2 - The 356 alloys which are different in the composition of Sr and Fe elements were heavily deformed by equal channel angular extrusion. The large acicular silicon in the unmodified alloy and the Fe-bearing phases act as crack initiators and provide easy paths for fracture. After extruded for 5 passes, the acicular silicon and Fe-bearing phases are obviously refined and rounded, both of which resulted in the higher values of mechanical properties. The elongation is greatly enhanced because the cracks have less opportunity to grow continuously along the boundaries of refined phases. The tensile strengths are also enhanced due to the recrystallized and finer grains.

AB - The 356 alloys which are different in the composition of Sr and Fe elements were heavily deformed by equal channel angular extrusion. The large acicular silicon in the unmodified alloy and the Fe-bearing phases act as crack initiators and provide easy paths for fracture. After extruded for 5 passes, the acicular silicon and Fe-bearing phases are obviously refined and rounded, both of which resulted in the higher values of mechanical properties. The elongation is greatly enhanced because the cracks have less opportunity to grow continuously along the boundaries of refined phases. The tensile strengths are also enhanced due to the recrystallized and finer grains.

KW - Equal channel angular extrusion

KW - Mechanical properties

KW - Metals and alloys

UR - http://www.scopus.com/inward/record.url?scp=41949136407&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2007.12.024

DO - 10.1016/j.matlet.2007.12.024

M3 - 期刊論文

AN - SCOPUS:41949136407

SN - 0167-577X

VL - 62

SP - 2469

EP - 2472

JO - Materials Letters

JF - Materials Letters

IS - 16

ER -

Modifying Al-7Si-0.35Mg alloys using equal channel angular extrusion

Abstract

Keywords

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