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The role of twinning in the initiati...

Bratton, Nicholas Robert.

The role of twinning in the initiation of fracture in AM30 and AZ61 magnesium alloys.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	The role of twinning in the initiation of fracture in AM30 and AZ61 magnesium alloys./
Author:	Bratton, Nicholas Robert.
Description:	40 p.
Notes:	Source: Masters Abstracts International, Volume: 50-05, page: .
Contained By:	Masters Abstracts International50-05.
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1509072
ISBN:	9781267295323

The role of twinning in the initiation of fracture in AM30 and AZ61 magnesium alloys.
Bratton, Nicholas Robert.

The role of twinning in the initiation of fracture in AM30 and AZ61 magnesium alloys. - 40 p.

Source: Masters Abstracts International, Volume: 50-05, page: .

Thesis (M.S.)--Mississippi State University, 2012.

Magnesium alloys are excellent material candidate to reduce mass of automotive structures, and as such to meet the Department of Energy's targets in fuel economy and clean energy. However, magnesium alloys show poor ductility at room temperature, which is one of the most important impediments to achieving cost-effective manufacturing of wrought alloys and insuring good energy absorption in crash structures. This Master thesis aims to identify the mechanisms behind the low ductility of magnesium. Therefore, non-destructive EBSD analyses upon tension of both a strong and weak textured magnesium alloy were conducted with a focus on the role of twinning in fracture initiation. This study revealed five mechanisms responsible for early fracture, all of which relate to twinning activity. These mechanisms were involved directly in the shear incompatibility arising from interactions between twin-twin, twin-slip, twin-grain boundary, and double twinning. Backstress played a major role in twin-grain boundary and twin-twin boundary interactions.

ISBN: 9781267295323Subjects--Topical Terms:

845387
Engineering, Mechanical.

The role of twinning in the initiation of fracture in AM30 and AZ61 magnesium alloys.
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020 $a 9781267295323
035 $a (UMI)AAI1509072
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100 1 $a Bratton, Nicholas Robert. $3 845712
245 1 4 $a The role of twinning in the initiation of fracture in AM30 and AZ61 magnesium alloys.
300 $a 40 p.
500 $a Source: Masters Abstracts International, Volume: 50-05, page: .
500 $a Adviser: Haitham El Kadiri.
502 $a Thesis (M.S.)--Mississippi State University, 2012.
520 $a Magnesium alloys are excellent material candidate to reduce mass of automotive structures, and as such to meet the Department of Energy's targets in fuel economy and clean energy. However, magnesium alloys show poor ductility at room temperature, which is one of the most important impediments to achieving cost-effective manufacturing of wrought alloys and insuring good energy absorption in crash structures. This Master thesis aims to identify the mechanisms behind the low ductility of magnesium. Therefore, non-destructive EBSD analyses upon tension of both a strong and weak textured magnesium alloy were conducted with a focus on the role of twinning in fracture initiation. This study revealed five mechanisms responsible for early fracture, all of which relate to twinning activity. These mechanisms were involved directly in the shear incompatibility arising from interactions between twin-twin, twin-slip, twin-grain boundary, and double twinning. Backstress played a major role in twin-grain boundary and twin-twin boundary interactions.
590 $a School code: 0132.
650 4 $a Engineering, Mechanical. $3 845387
650 4 $a Engineering, Materials Science. $3 845422
690 $a 0548
690 $a 0794
710 2 $a Mississippi State University. $b Mechanical Engineering. $3 845713
773 0 $t Masters Abstracts International $g 50-05.
790 1 0 $a El Kadiri, Haitham, $e advisor
790 1 0 $a Horstemeyer, Mark $e committee member
790 1 0 $a Hammi, Youseff $e committee member
790 $a 0132
791 $a M.S.
792 $a 2012
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1509072

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