Dislocation cross-slip in precipitation hardened Mg–Nd alloys
Abstract
An integrated experimental characterization and molecular dynamics (MD) simulation approach was used to explore the dislocation-precipitate interactions in a dilute Magnesium–Neodymium (Mg–Nd) precipitation hardened alloy. In situ indentation in a transmission electron microscope (TEM) and postmortem TEM characterization of deformed samples and MD simulations revealed that basal < a > type dislocations interacted differently with β1 (Mg3Nd) and β"(Mg3-7Nd) precipitates. For β" precipitates, the basal dislocations directly shear the precipitates. For β1 precipitates, such shearing becomes much more difficult because it requires the creation of antiphase boundaries in the ordered lattice of β1 precipitates. Screw dislocations were observed to cross-slip from basal to the prismatic plane, which could be parallel to the broad facet of β1 precipitates. It is postulated that double cross-slip (basal to prismatic to basal) via the Hirsch mechanism may enable screw dislocations to overcome the β1 precipitates. MD simulations also revealed that an edge dislocation is unable to bypass the precipitate via the generation of screw dislocation segments plus the double cross-slip mechanism. The edge dislocation can bow around the precipitate, and the segment that adopts a screw character can cross-slip to the prismatic plane but with increasing applied stress, cross-slips back to the original basalmore »
- Authors:
-
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States); Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1851125
- Alternate Identifier(s):
- OSTI ID: 1778277
- Grant/Contract Number:
- SC0008637; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Alloys and Compounds
- Additional Journal Information:
- Journal Volume: 859; Journal Issue: C; Journal ID: ISSN 0925-8388
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; Chemistry; Materials Science; Metallurgy & Metallurgical Engineering; Magnesium alloyIn situ transmission electron microscope (TEM); Dislocation; DuctilityCross-slip
Citation Formats
Huang, Zhihua, Yang, Chaoming, Allison, John E., Qi, Liang, and Misra, Amit. Dislocation cross-slip in precipitation hardened Mg–Nd alloys. United States: N. p., 2020.
Web. doi:10.1016/j.jallcom.2020.157858.
Huang, Zhihua, Yang, Chaoming, Allison, John E., Qi, Liang, & Misra, Amit. Dislocation cross-slip in precipitation hardened Mg–Nd alloys. United States. https://doi.org/10.1016/j.jallcom.2020.157858
Huang, Zhihua, Yang, Chaoming, Allison, John E., Qi, Liang, and Misra, Amit. Thu .
"Dislocation cross-slip in precipitation hardened Mg–Nd alloys". United States. https://doi.org/10.1016/j.jallcom.2020.157858. https://www.osti.gov/servlets/purl/1851125.
@article{osti_1851125,
title = {Dislocation cross-slip in precipitation hardened Mg–Nd alloys},
author = {Huang, Zhihua and Yang, Chaoming and Allison, John E. and Qi, Liang and Misra, Amit},
abstractNote = {An integrated experimental characterization and molecular dynamics (MD) simulation approach was used to explore the dislocation-precipitate interactions in a dilute Magnesium–Neodymium (Mg–Nd) precipitation hardened alloy. In situ indentation in a transmission electron microscope (TEM) and postmortem TEM characterization of deformed samples and MD simulations revealed that basal < a > type dislocations interacted differently with β1 (Mg3Nd) and β"(Mg3-7Nd) precipitates. For β" precipitates, the basal dislocations directly shear the precipitates. For β1 precipitates, such shearing becomes much more difficult because it requires the creation of antiphase boundaries in the ordered lattice of β1 precipitates. Screw dislocations were observed to cross-slip from basal to the prismatic plane, which could be parallel to the broad facet of β1 precipitates. It is postulated that double cross-slip (basal to prismatic to basal) via the Hirsch mechanism may enable screw dislocations to overcome the β1 precipitates. MD simulations also revealed that an edge dislocation is unable to bypass the precipitate via the generation of screw dislocation segments plus the double cross-slip mechanism. The edge dislocation can bow around the precipitate, and the segment that adopts a screw character can cross-slip to the prismatic plane but with increasing applied stress, cross-slips back to the original basal plane to continue glide via precipitate shearing. Finally, the implication of glide dislocation - β1-precipitate interaction mechanisms on the strength and ductility of β1 precipitate dominant microstructures is discussed.},
doi = {10.1016/j.jallcom.2020.157858},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 859,
place = {United States},
year = {Thu Nov 12 00:00:00 EST 2020},
month = {Thu Nov 12 00:00:00 EST 2020}
}
Works referenced in this record:
Interaction Between Basal Slip and a Mg17Al12 Precipitate in Magnesium
journal, April 2014
- Liao, Min; Li, B.; Horstemeyer, M. F.
- Metallurgical and Materials Transactions A, Vol. 45, Issue 8
Modified embedded-atom method interatomic potential for Mg–Y alloys
journal, July 2018
- Ahmad, Rasool; Groh, Sébastien; Ghazisaeidi, Maryam
- Modelling and Simulation in Materials Science and Engineering, Vol. 26, Issue 6
Chapter 88 Dislocation–Obstacle Interactions at the Atomic Level
book, January 2009
- Bacon, D. J.; Osetsky, Y. N.; Rodney, D.
- Dislocations in Solids
The relation between ductility and stacking fault energies in Mg and Mg–Y alloys
journal, April 2012
- Sandlöbes, S.; Friák, M.; Zaefferer, S.
- Acta Materialia, Vol. 60, Issue 6-7
A simulation study of β 1 precipitation on dislocations in an Mg–rare earth alloy
journal, September 2014
- Liu, H.; Gao, Y.; Zhu, Y. M.
- Acta Materialia, Vol. 77
Phase-Field Simulation of Orowan Strengthening by Coherent Precipitate Plates in an Aluminum Alloy
journal, May 2015
- Liu, Hong; Gao, Yipeng; Qi, Liang
- Metallurgical and Materials Transactions A, Vol. 46, Issue 7
Deformation behavior of β′ and β′′′ precipitates in Mg-RE alloys
journal, April 2018
- Solomon, Ellen L. S.; Marquis, Emmanuelle A.
- Materials Letters, Vol. 216
Magnesium interatomic potential for simulating plasticity and fracture phenomena
journal, December 2014
- Wu, Z.; Francis, M. F.; Curtin, W. A.
- Modelling and Simulation in Materials Science and Engineering, Vol. 23, Issue 1
Precipitation and its effect on the mechanical properties of a cast Mg–Gd–Nd–Zr alloy
journal, August 2008
- Zheng, K. Y.; Dong, J.; Zeng, X. Q.
- Materials Science and Engineering: A, Vol. 489, Issue 1-2
Determining the strength of GP zones in Mg alloy AXM10304, both parallel and perpendicular to the zone
journal, June 2019
- Bhattacharyya, J. J.; Sasaki, T. T.; Nakata, T.
- Acta Materialia, Vol. 171
An in situ study of prismatic glide in magnesium—I. The rate controlling mechanism
journal, August 1985
- Couret, A.; Caillard, D.
- Acta Metallurgica, Vol. 33, Issue 8
Origin of the low precipitation hardening in magnesium alloys
journal, February 2019
- Cepeda-Jiménez, C. M.; Castillo-Rodríguez, M.; Pérez-Prado, M. T.
- Acta Materialia, Vol. 165
Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B
journal, June 2005
- Agnew, Sean R.; Duygulu, Özgür
- International Journal of Plasticity, Vol. 21, Issue 6
Origins of high strength and ductility combination in a Guinier-Preston zone containing Mg-Al-Ca-Mn alloy
journal, April 2019
- Bhattacharyya, J. J.; Nakata, T.; Kamado, S.
- Scripta Materialia, Vol. 163
Pyramidal I slip in c-axis compressed Mg single crystals
journal, February 2016
- Xie, Kelvin Y.; Alam, Zafir; Caffee, Alexander
- Scripta Materialia, Vol. 112
Fast Parallel Algorithms for Short-Range Molecular Dynamics
journal, March 1995
- Plimpton, Steve
- Journal of Computational Physics, Vol. 117, Issue 1
Effect of rare earth elements on the microstructure and texture development in magnesium–manganese alloys during extrusion
journal, October 2010
- Bohlen, Jan; Yi, Sangbong; Letzig, Dietmar
- Materials Science and Engineering: A, Vol. 527, Issue 26
The activity of non-basal slip systems and dynamic recovery at room temperature in fine-grained AZ31B magnesium alloys
journal, April 2003
- Koike, J.; Kobayashi, T.; Mukai, T.
- Acta Materialia, Vol. 51, Issue 7
On the early stages of precipitation in dilute Mg–Nd alloys
journal, April 2016
- Natarajan, Anirudh Raju; Solomon, Ellen L. S.; Puchala, Brian
- Acta Materialia, Vol. 108
Cross‐Slip Dislocations and Their Multiplication in (001)‐Oriented Silicon Wafers
journal, July 1975
- Matsui, Junji
- Journal of The Electrochemical Society, Vol. 122, Issue 7
Atomistic simulations of basal dislocations in Mg interacting with Mg17Al12 precipitates
journal, September 2019
- Vaid, Aviral; Guénolé, Julien; Prakash, Aruna
- Materialia, Vol. 7
Slip mode dependency of dislocation shearing and looping of precipitates in Mg alloy WE43
journal, March 2018
- Bhattacharyya, J. J.; Wang, F.; Stanford, N.
- Acta Materialia, Vol. 146
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool
journal, December 2009
- Stukowski, Alexander
- Modelling and Simulation in Materials Science and Engineering, Vol. 18, Issue 1
In situ transmission electron microscopy investigation on 〈 c + a 〉 slip in Mg
journal, February 2019
- Zhang, Dalong; Jiang, Lin; Wang, Xin
- Journal of Materials Research, Vol. 34, Issue 9
Intrinsic stacking faults in body-centred cubic crystals
journal, October 1968
- Vítek, V.
- Philosophical Magazine, Vol. 18, Issue 154
Large plasticity in magnesium mediated by pyramidal dislocations
journal, July 2019
- Liu, Bo-Yu; Liu, Fei; Yang, Nan
- Science, Vol. 365, Issue 6448
Prediction of thermal cross-slip stress in magnesium alloys from direct first-principles data
journal, August 2011
- Yasi, Joseph A.; Hector, Louis G.; Trinkle, Dallas R.
- Acta Materialia, Vol. 59, Issue 14
Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
journal, February 2018
- Huang, Zhihua; Allison, John E.; Misra, Amit
- Scientific Reports, Vol. 8, Issue 1
Dislocation pile-ups at β1 precipitate interfaces in Mg-rare earth (RE) alloys
journal, January 2019
- Huang, Zhihua; Yang, Chaoming; Qi, Liang
- Materials Science and Engineering: A, Vol. 742
Mechanistic origin and prediction of enhanced ductility in magnesium alloys
journal, January 2018
- Wu, Zhaoxuan; Ahmad, Rasool; Yin, Binglun
- Science, Vol. 359, Issue 6374
Characterisation of strengthening precipitate phases in a Mg–Y–Nd alloy
journal, May 2000
- Nie, J. F.; Muddle, B. C.
- Acta Materialia, Vol. 48, Issue 8
Age hardening in a Mg-9 wt.% Al alloy
journal, February 1968
- Clark, J. B.
- Acta Metallurgica, Vol. 16, Issue 2
The origins of high hardening and low ductility in magnesium
journal, September 2015
- Wu, Zhaoxuan; Curtin, W. A.
- Nature, Vol. 526, Issue 7571
Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y
journal, December 2001
- Agnew, S. R.; Yoo, M. H.; Tomé, C. N.
- Acta Materialia, Vol. 49, Issue 20
Reducing deformation anisotropy to achieve ultrahigh strength and ductility in Mg at the nanoscale
journal, July 2013
- Yu, Q.; Qi, L.; Mishra, R. K.
- Proceedings of the National Academy of Sciences, Vol. 110, Issue 33
L'activation thermique des déviations sous faibles contraintes dans les structures h.c. et c.c. Par
journal, January 1968
- Escaig, B.
- Physica Status Solidi (b), Vol. 28, Issue 2
On the role of non-basal deformation mechanisms for the ductility of Mg and Mg–Y alloys
journal, January 2011
- Sandlöbes, S.; Zaefferer, S.; Schestakow, I.
- Acta Materialia, Vol. 59, Issue 2
Non-basal slip systems in HCP metals and alloys: source mechanisms
journal, December 2001
- Yoo, M. H.; Agnew, S. R.; Morris, J. R.
- Materials Science and Engineering: A, Vol. 319-321
Geometrical criterion for the activation of prismatic slip in AZ61 Mg alloy sheets deformed at room temperature
journal, April 2005
- Koike, J.; Ohyama, R.
- Acta Materialia, Vol. 53, Issue 7
Prediction of thermal cross-slip stress in magnesium alloys from a geometric interaction model
journal, March 2012
- Yasi, Joseph A.; Hector, Louis G.; Trinkle, Dallas R.
- Acta Materialia, Vol. 60, Issue 5
Dislocations and Cracks in Anisotropic Elasticity
journal, June 1958
- Stroh, A. N.
- Philosophical Magazine, Vol. 3, Issue 30