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Title: Inverse Slip Accompanying Twinning and Detwinning during Cyclic Loading of Magnesium Single Crystal

Journal Article · · Journal of Materials
DOI:https://doi.org/10.1155/2013/903786· OSTI ID:1279010
ORCiD logo [1];  [2];  [3]
  1. Department of Mechanical Engineering, University of Nevada, Reno, NV 89557, USA, Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
  2. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
  3. Department of Mechanical Engineering, University of Nevada, Reno, NV 89557, USA

In situ , observation of twinning and detwinning in magnesium single crystals during tension-compression cyclic loading was made using optical microscopy. A quantitative analysis of plastic strain indicates that twinning and detwinning experience two stages, low and high work hardening de-twinning, and pure re-twinning and fresh twinning combined with retwinning. Slip is always activated. For the first time, inverse slip accompanying with pure retwinning and high work hardening detwinning was experimentally identified, which provides insights in better understanding of the activity of twining, detwinning, and slips.

Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0002144; FWP 06SCPE401; W-7405-ENG-36
OSTI ID:
1279010
Journal Information:
Journal of Materials, Journal Name: Journal of Materials Vol. 2013; ISSN 2314-4866
Publisher:
Hindawi Publishing CorporationCopyright Statement
Country of Publication:
Country unknown/Code not available
Language:
English

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Zonal dislocations mediating <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:mo stretchy="false">{</mml:mo><mml:mn>1</mml:mn><mml:mspace width="0.12em"/><mml:mn>0</mml:mn><mml:mspace width="0.12em"/><mml:mover accent="true"><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow><mml:mo stretchy="true">¯</mml:mo></mml:mrow></mml:mover><mml:mspace width="0.12em"/><mml:mn>1</mml:mn><mml:mo stretchy="false">}</mml:mo><mml:mo stretchy="false">〈</mml:mo><mml:mn>1</mml:mn><mml:mspace width="0.12em"/><mml:mn>0</mml:mn><mml:mspace width="0.12em"/><mml:mover accent="true"><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow><mml:mo stretchy="true">¯</mml:mo></mml:mrow></mml:mover><mml:mspace width="0.12em"/><mml:mover accent="true"><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mo stretchy="true">¯</mml:mo></mml:mrow></mml:mover><mml:mo stretchy="false">〉</mml:mo></mml:mrow></mml:math> twinning in magnesium journal April 2009
An atomic and probabilistic perspective on twin nucleation in Mg journal October 2010

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