Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy

Hong Liu; Yunzhi Wang; Jian Feng Nie

Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy

Hong Liu
, Yunzhi Wang
, Jian Feng Nie

Materials Science & Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

2 Citations (Scopus)

Abstract

The phase field dislocation model has been used to compute and simulate interactions between basal a-type dislocations and coherent β1 precipitate plates in a Mg-3wt.%Nd alloy that is strengthened exclusively by the β1 plates. The computed increments of the critical resolved shear stress (ΔCRSS) for samples aged for 10 hours at 523 K agree well with those calculated from the existing strengthening equation for plate-shaped particles. The phase field simulations further indicate that the ΔCRSS value increases with an increase in plate aspect ratio and number density, and that the change of ΔCRSS is not sensitive to the variation of βi plate diameter distribution when the average diameter of βi plates is fixed. When the volume fraction of βi plates is constant, the ΔCRSS value for a random spatial distribution of the βi plates is approximately 0.78 times of that for a regular spatial distribution.

Original language	English
Title of host publication	Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015
Subtitle of host publication	Colorado Springs, USA; 31 May 2015 through 4 June 2015
Editors	Warren Poole, Steve Christensen, Surya Kalidindi, Alan Luo, Jonathan Madison, Dierk Raabe, Xin Sun
Place of Publication	Switzerland
Publisher	Springer
Pages	63-71
Number of pages	9
ISBN (Electronic)	9781119139492, 9783319481708
ISBN (Print)	9783319486123
Publication status	Published - 2016
Event	World Congress on Integrated Computational Materials Engineering (ICME) 2015 - Colorado Springs, United States of America Duration: 31 May 2015 → 4 Jun 2015 Conference number: 3rd

Conference

Conference	World Congress on Integrated Computational Materials Engineering (ICME) 2015
Abbreviated title	ICME 2015
Country/Territory	United States of America
City	Colorado Springs
Period	31/05/15 → 4/06/15

Keywords

CRSS
Magnesium alloys
Phase field method
Precipitate-dislocation interaction

Cite this

Liu, H., Wang, Y., & Nie, J. F. (2016). Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy. In W. Poole, S. Christensen, S. Kalidindi, A. Luo, J. Madison, D. Raabe, & X. Sun (Eds.), Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015: Colorado Springs, USA; 31 May 2015 through 4 June 2015 (pp. 63-71). Springer.

Liu, Hong ; Wang, Yunzhi ; Nie, Jian Feng. / Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy. Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015: Colorado Springs, USA; 31 May 2015 through 4 June 2015. editor / Warren Poole ; Steve Christensen ; Surya Kalidindi ; Alan Luo ; Jonathan Madison ; Dierk Raabe ; Xin Sun. Switzerland : Springer, 2016. pp. 63-71

@inproceedings{2a7bee3794104affb53710b17426d16e,

title = "Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy",

abstract = "The phase field dislocation model has been used to compute and simulate interactions between basal a-type dislocations and coherent β1 precipitate plates in a Mg-3wt.\%Nd alloy that is strengthened exclusively by the β1 plates. The computed increments of the critical resolved shear stress (ΔCRSS) for samples aged for 10 hours at 523 K agree well with those calculated from the existing strengthening equation for plate-shaped particles. The phase field simulations further indicate that the ΔCRSS value increases with an increase in plate aspect ratio and number density, and that the change of ΔCRSS is not sensitive to the variation of βi plate diameter distribution when the average diameter of βi plates is fixed. When the volume fraction of βi plates is constant, the ΔCRSS value for a random spatial distribution of the βi plates is approximately 0.78 times of that for a regular spatial distribution.",

keywords = "CRSS, Magnesium alloys, Phase field method, Precipitate-dislocation interaction",

author = "Hong Liu and Yunzhi Wang and Nie, \{Jian Feng\}",

year = "2016",

language = "English",

isbn = "9783319486123",

pages = "63--71",

editor = "Warren Poole and Steve Christensen and Surya Kalidindi and Alan Luo and Jonathan Madison and Dierk Raabe and Xin Sun",

booktitle = "Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015",

publisher = "Springer",

address = "Switzerland",

note = "World Congress on Integrated Computational Materials Engineering (ICME) 2015, ICME 2015 ; Conference date: 31-05-2015 Through 04-06-2015",

}

Liu, H, Wang, Y & Nie, JF 2016, Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy. in W Poole, S Christensen, S Kalidindi, A Luo, J Madison, D Raabe & X Sun (eds), Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015: Colorado Springs, USA; 31 May 2015 through 4 June 2015. Springer, Switzerland, pp. 63-71, World Congress on Integrated Computational Materials Engineering (ICME) 2015, Colorado Springs, Colorado, United States of America, 31/05/15.

Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy. / Liu, Hong; Wang, Yunzhi; Nie, Jian Feng.
Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015: Colorado Springs, USA; 31 May 2015 through 4 June 2015. ed. / Warren Poole; Steve Christensen; Surya Kalidindi; Alan Luo; Jonathan Madison; Dierk Raabe; Xin Sun. Switzerland: Springer, 2016. p. 63-71.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

TY - GEN

T1 - Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy

AU - Liu, Hong

AU - Wang, Yunzhi

AU - Nie, Jian Feng

N1 - Conference code: 3rd

PY - 2016

Y1 - 2016

N2 - The phase field dislocation model has been used to compute and simulate interactions between basal a-type dislocations and coherent β1 precipitate plates in a Mg-3wt.%Nd alloy that is strengthened exclusively by the β1 plates. The computed increments of the critical resolved shear stress (ΔCRSS) for samples aged for 10 hours at 523 K agree well with those calculated from the existing strengthening equation for plate-shaped particles. The phase field simulations further indicate that the ΔCRSS value increases with an increase in plate aspect ratio and number density, and that the change of ΔCRSS is not sensitive to the variation of βi plate diameter distribution when the average diameter of βi plates is fixed. When the volume fraction of βi plates is constant, the ΔCRSS value for a random spatial distribution of the βi plates is approximately 0.78 times of that for a regular spatial distribution.

AB - The phase field dislocation model has been used to compute and simulate interactions between basal a-type dislocations and coherent β1 precipitate plates in a Mg-3wt.%Nd alloy that is strengthened exclusively by the β1 plates. The computed increments of the critical resolved shear stress (ΔCRSS) for samples aged for 10 hours at 523 K agree well with those calculated from the existing strengthening equation for plate-shaped particles. The phase field simulations further indicate that the ΔCRSS value increases with an increase in plate aspect ratio and number density, and that the change of ΔCRSS is not sensitive to the variation of βi plate diameter distribution when the average diameter of βi plates is fixed. When the volume fraction of βi plates is constant, the ΔCRSS value for a random spatial distribution of the βi plates is approximately 0.78 times of that for a regular spatial distribution.

KW - CRSS

KW - Magnesium alloys

KW - Phase field method

KW - Precipitate-dislocation interaction

UR - https://www.scopus.com/pages/publications/84975830619

M3 - Conference Paper

AN - SCOPUS:84975830619

SN - 9783319486123

SP - 63

EP - 71

BT - Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015

A2 - Poole, Warren

A2 - Christensen, Steve

A2 - Kalidindi, Surya

A2 - Luo, Alan

A2 - Madison, Jonathan

A2 - Raabe, Dierk

A2 - Sun, Xin

PB - Springer

CY - Switzerland

T2 - World Congress on Integrated Computational Materials Engineering (ICME) 2015

Y2 - 31 May 2015 through 4 June 2015

ER -

Liu H, Wang Y, Nie JF. Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy. In Poole W, Christensen S, Kalidindi S, Luo A, Madison J, Raabe D, Sun X, editors, Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering, ICME 2015: Colorado Springs, USA; 31 May 2015 through 4 June 2015. Switzerland: Springer. 2016. p. 63-71

Phase field simulation of orowan strengthening by coherent precipitate plates in a Mg-Nd alloy

Abstract

Conference

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