skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Bending Behavior of a Wrought Magnesium Alloy Investigated by the In Situ Pinhole Neutron Diffraction Method

Abstract

The tensile twinning and detwinning behaviors of a wrought magnesium alloy have been investigated during in situ four-point bending using the state-of-the-art high spatial resolution pinhole neutron diffraction (PIND) method. The PIND method allowed us to resolve the tensile twinning/detwinning and lattice strain distributions across the bending sample during a loading-unloading sequence with a 0.5 mm step size. It was found that the extensive tensile twinning and detwinning occurred near the compression surface, while no tensile twinning behavior was observed in the middle layer and tension side of the bending sample. During the bending, the neutral plane shifted from the compression side to the tension side. Compared with the traditional neutron diffraction mapping method, the PIND method provides more detailed information inside the bending sample due to a higher spatial resolution.

Authors:
; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); ORNL Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1467747
Alternate Identifier(s):
OSTI ID: 1479746
Grant/Contract Number:  
[AC05-00OR22725]
Resource Type:
Published Article
Journal Name:
Crystals
Additional Journal Information:
[Journal Name: Crystals Journal Volume: 8 Journal Issue: 9]; Journal ID: ISSN 2073-4352
Publisher:
MDPI
Country of Publication:
Germany
Language:
English
Subject:
36 MATERIALS SCIENCE; pinhole neutron diffraction; Mg alloys; bending; tensile twinning

Citation Formats

Wu, Wei, Stoica, Alexandru, Yu, Dunji, Frost, Matthew, Skorpenske, Harley, and An, Ke. Bending Behavior of a Wrought Magnesium Alloy Investigated by the In Situ Pinhole Neutron Diffraction Method. Germany: N. p., 2018. Web. doi:10.3390/cryst8090348.
Wu, Wei, Stoica, Alexandru, Yu, Dunji, Frost, Matthew, Skorpenske, Harley, & An, Ke. Bending Behavior of a Wrought Magnesium Alloy Investigated by the In Situ Pinhole Neutron Diffraction Method. Germany. doi:10.3390/cryst8090348.
Wu, Wei, Stoica, Alexandru, Yu, Dunji, Frost, Matthew, Skorpenske, Harley, and An, Ke. Thu . "Bending Behavior of a Wrought Magnesium Alloy Investigated by the In Situ Pinhole Neutron Diffraction Method". Germany. doi:10.3390/cryst8090348.
@article{osti_1467747,
title = {Bending Behavior of a Wrought Magnesium Alloy Investigated by the In Situ Pinhole Neutron Diffraction Method},
author = {Wu, Wei and Stoica, Alexandru and Yu, Dunji and Frost, Matthew and Skorpenske, Harley and An, Ke},
abstractNote = {The tensile twinning and detwinning behaviors of a wrought magnesium alloy have been investigated during in situ four-point bending using the state-of-the-art high spatial resolution pinhole neutron diffraction (PIND) method. The PIND method allowed us to resolve the tensile twinning/detwinning and lattice strain distributions across the bending sample during a loading-unloading sequence with a 0.5 mm step size. It was found that the extensive tensile twinning and detwinning occurred near the compression surface, while no tensile twinning behavior was observed in the middle layer and tension side of the bending sample. During the bending, the neutral plane shifted from the compression side to the tension side. Compared with the traditional neutron diffraction mapping method, the PIND method provides more detailed information inside the bending sample due to a higher spatial resolution.},
doi = {10.3390/cryst8090348},
journal = {Crystals},
number = [9],
volume = [8],
place = {Germany},
year = {2018},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.3390/cryst8090348

Save / Share:

Works referenced in this record:

Microstructural and micromechanical characterization of IN718 theta shaped specimens built with electron beam melting
journal, April 2016


Three-point bending behavior of a ZEK100 Mg alloy at room temperature
journal, January 2014


Internal strain and texture evolution during deformation twinning in magnesium
journal, June 2005

  • Brown, D. W.; Agnew, S. R.; Bourke, M. A. M.
  • Materials Science and Engineering: A, Vol. 399, Issue 1-2
  • DOI: 10.1016/j.msea.2005.02.016

First In Situ Lattice Strains Measurements Under Load at VULCAN
journal, October 2010

  • An, Ke; Skorpenske, Harley D.; Stoica, Alexandru D.
  • Metallurgical and Materials Transactions A, Vol. 42, Issue 1
  • DOI: 10.1007/s11661-010-0495-9

A study of stress-induced phase transformation and micromechanical behavior of CuZr-based alloy by in-situ neutron diffraction
journal, March 2017


In situ neutron diffraction investigation of deformation twinning and pseudoelastic-like behaviour of extruded AZ31 magnesium alloy
journal, June 2009


Deformation characteristics of the intermetallic alloy 60NiTi
journal, March 2017


The effects of texture and extension twinning on the low-cycle fatigue behavior of a rolled magnesium alloy, AZ31B
journal, October 2010


In-situ investigation on the microstructure evolution and plasticity of two magnesium alloys during three-point bending
journal, September 2015


In situ neutron diffraction measurement of transient temperature and stress fields in a thin plate
journal, June 2006

  • Woo, Wanchuck; Feng, Zhili; Wang, Xun-Li
  • Applied Physics Letters, Vol. 88, Issue 26
  • DOI: 10.1063/1.2209888

Twinning and the ductility of magnesium alloys
journal, August 2007


In situ neutron diffraction measurements of temperature and stresses during friction stir welding of 6061-T6 aluminium alloy
journal, May 2007

  • Woo, W.; Feng, Z.; Wang, X. -L.
  • Science and Technology of Welding and Joining, Vol. 12, Issue 4
  • DOI: 10.1179/174329307X197548

Forming limit of textured AZ31B magnesium alloy sheet at different temperatures
journal, April 2011

  • Huang, Guang-sheng; Zhang, Hua; Gao, Xiao-yun
  • Transactions of Nonferrous Metals Society of China, Vol. 21, Issue 4
  • DOI: 10.1016/S1003-6326(11)60790-5

PIND: High spatial resolution by pinhole neutron diffraction
journal, June 2018

  • Wu, Wei; Stoica, Alexandru D.; Berry, Kevin D.
  • Applied Physics Letters, Vol. 112, Issue 25
  • DOI: 10.1063/1.5026066

Elimination of ghosting artifacts from wavelength-shifting fiber neutron detectors
journal, January 2013

  • Wang, C. L.; Clonts, L. G.; Diawara, Y.
  • Review of Scientific Instruments, Vol. 84, Issue 1
  • DOI: 10.1063/1.4789497

Temperature-dependent behavior of a polycrystalline NiTi shape memory alloy around the transformation regime
journal, April 2013


Intragranular twinning, detwinning, and twinning-like lattice reorientation in magnesium alloys
journal, December 2016


Phase-specific deformation behavior of a NiAl–Cr(Mo) lamellar composite under thermal and mechanical loads
journal, January 2016


Event-based processing of neutron scattering data at the Spallation Neutron Source
journal, May 2018

  • Granroth, Garrett E.; An, Ke; Smith, Hillary L.
  • Journal of Applied Crystallography, Vol. 51, Issue 3
  • DOI: 10.1107/S1600576718004727

Temperature-dependent elastic anisotropy and mesoscale deformation in a nanostructured ferritic alloy
journal, October 2014

  • Stoica, G. M.; Stoica, A. D.; Miller, M. K.
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms6178

Investigation of deformation twinning under complex stress states in a rolled magnesium alloy
journal, October 2016


Current issues in magnesium sheet alloys: Where do we go from here?
journal, August 2014


Twinning-mediated work hardening and texture evolution in CrCoFeMnNi high entropy alloys at cryogenic temperature
journal, October 2017


Electronically focused time-of-flight powder diffractometers at the intense pulsed neutron source
journal, August 1989

  • Jorgensen, J. D.; Faber, J.; Carpenter, J. M.
  • Journal of Applied Crystallography, Vol. 22, Issue 4
  • DOI: 10.1107/S002188988900289X

Changes in lattice-strain profiles around a fatigue crack through the retardation period after overloading
journal, November 2006


Evolution of residual-strain distribution through an overload-induced retardation period during fatigue-crack growth
journal, January 2010

  • Lee, S. Y.; Sun, Y.; An, K.
  • Journal of Applied Physics, Vol. 107, Issue 2
  • DOI: 10.1063/1.3234388

Uniformity measurements and new positioning algorithms for wavelength-shifting fiber neutron detectors
journal, July 2014

  • Wang, C. L.; Riedel, R. A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 751
  • DOI: 10.1016/j.nima.2014.03.024

Investigation of deformation dynamics in a wrought magnesium alloy
journal, November 2014


Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B
journal, June 2005


Magnesium alloys and applications
journal, January 1994


Large deformation of magnesium sheet at room temperature by preform annealing, part II: “Bending”
journal, December 2014

  • Habibnejad-korayem, Mahdi; Jain, Mukesh K.; Mishra, Raja K.
  • Materials Science and Engineering: A, Vol. 619
  • DOI: 10.1016/j.msea.2014.09.096

A study of lattice elasticity from low entropy metals to medium and high entropy alloys
journal, May 2015


Pinhole Optics
journal, January 1971


Hardening evolution of AZ31B Mg sheet
journal, January 2007


Twinning–detwinning behavior during fatigue-crack propagation in a wrought magnesium alloy AZ31B
journal, October 2012


Unraveling cyclic deformation mechanisms of a rolled magnesium alloy using in situ neutron diffraction
journal, February 2015


Phase-specific deformation behavior of a relatively tough NiAl–Cr(Mo) lamellar composite
journal, August 2014


Modeling the effect of twinning and detwinning during strain-path changes of magnesium alloy AZ31
journal, May 2009

  • Proust, Gwénaëlle; Tomé, Carlos N.; Jain, Ashutosh
  • International Journal of Plasticity, Vol. 25, Issue 5
  • DOI: 10.1016/j.ijplas.2008.05.005

Deformation dynamics study of a wrought magnesium alloy by real-time in situ neutron diffraction
journal, September 2013


Understanding low-cycle fatigue life improvement mechanisms in a pre-twinned magnesium alloy
journal, January 2016