Quasi-in-situ study on {10-12} twinning-detwinning behavior of rolled Mg-Li alloy in two-step compression (RD)-compression (ND) process

Biaobiao Yang; Chenying Shi; Siyu Zhang; Jingjing Hu; Jianwei Teng; Yujie Cui; Yunping Li; Akihiko Chiba

doi:10.1016/j.jma.2021.01.006

Quasi-in-situ study on {10-12} twinning-detwinning behavior of rolled Mg-Li alloy in two-step compression (RD)-compression (ND) process

Biaobiao Yang, Chenying Shi, Siyu Zhang, Jingjing Hu, Jianwei Teng, Yujie Cui, Yunping Li, Akihiko Chiba

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Twinning-detwinning (TDT) behavior in a strongly basal-textured Mg-Li alloy during two-step compression (RD)-compression (ND) process was investigated using quasi-in-situ EBSD. TDT behavior and TDT variants selection were statistically discussed with the loading path for the first time. Non-Schmid twinning behavior was observed in the first step compression, owing to the local stress fluctuations by neighboring twins; in contrast, Schmid's law well predicted the detwinning variants selection. This asymmetrical TDT behavior was first investigated to date related with the strong basal texture and loading path. Besides, with the progress of compression, Schmid factors for twinning demonstrated a decreasing tendency; however, those for detwinning during the second step displayed an abnormally increasing trend, fundamentally stemming from prior twinning behavior.

Original language	English
Pages (from-to)	2775-2787
Number of pages	13
Journal	Journal of Magnesium and Alloys
Volume	10
Issue number	10
DOIs	https://doi.org/10.1016/j.jma.2021.01.006
Publication status	Published - 2022 Oct

Keywords

Biaxial loading
Mg-Li alloy
Quasi-in-situ
Twinning-detwinning

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10.1016/j.jma.2021.01.006

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title = "Quasi-in-situ study on {10-12} twinning-detwinning behavior of rolled Mg-Li alloy in two-step compression (RD)-compression (ND) process",

abstract = "Twinning-detwinning (TDT) behavior in a strongly basal-textured Mg-Li alloy during two-step compression (RD)-compression (ND) process was investigated using quasi-in-situ EBSD. TDT behavior and TDT variants selection were statistically discussed with the loading path for the first time. Non-Schmid twinning behavior was observed in the first step compression, owing to the local stress fluctuations by neighboring twins; in contrast, Schmid's law well predicted the detwinning variants selection. This asymmetrical TDT behavior was first investigated to date related with the strong basal texture and loading path. Besides, with the progress of compression, Schmid factors for twinning demonstrated a decreasing tendency; however, those for detwinning during the second step displayed an abnormally increasing trend, fundamentally stemming from prior twinning behavior.",

keywords = "Biaxial loading, Mg-Li alloy, Quasi-in-situ, Twinning-detwinning",

author = "Biaobiao Yang and Chenying Shi and Siyu Zhang and Jingjing Hu and Jianwei Teng and Yujie Cui and Yunping Li and Akihiko Chiba",

note = "Funding Information: This investigation is supported by the grant from the Natural Science Foundation of China ( 51871244 ), the Hunan Provincial Innovation Foundation for Postgraduate ( CX20200172 ) and the Fundamental Research Funds for the Central Universities of Central South University ( 1053320190103 ). Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = oct,

doi = "10.1016/j.jma.2021.01.006",

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T1 - Quasi-in-situ study on {10-12} twinning-detwinning behavior of rolled Mg-Li alloy in two-step compression (RD)-compression (ND) process

AU - Yang, Biaobiao

AU - Shi, Chenying

AU - Zhang, Siyu

AU - Hu, Jingjing

AU - Teng, Jianwei

AU - Cui, Yujie

AU - Li, Yunping

AU - Chiba, Akihiko

N1 - Funding Information: This investigation is supported by the grant from the Natural Science Foundation of China ( 51871244 ), the Hunan Provincial Innovation Foundation for Postgraduate ( CX20200172 ) and the Fundamental Research Funds for the Central Universities of Central South University ( 1053320190103 ). Publisher Copyright: © 2021

PY - 2022/10

Y1 - 2022/10

N2 - Twinning-detwinning (TDT) behavior in a strongly basal-textured Mg-Li alloy during two-step compression (RD)-compression (ND) process was investigated using quasi-in-situ EBSD. TDT behavior and TDT variants selection were statistically discussed with the loading path for the first time. Non-Schmid twinning behavior was observed in the first step compression, owing to the local stress fluctuations by neighboring twins; in contrast, Schmid's law well predicted the detwinning variants selection. This asymmetrical TDT behavior was first investigated to date related with the strong basal texture and loading path. Besides, with the progress of compression, Schmid factors for twinning demonstrated a decreasing tendency; however, those for detwinning during the second step displayed an abnormally increasing trend, fundamentally stemming from prior twinning behavior.

AB - Twinning-detwinning (TDT) behavior in a strongly basal-textured Mg-Li alloy during two-step compression (RD)-compression (ND) process was investigated using quasi-in-situ EBSD. TDT behavior and TDT variants selection were statistically discussed with the loading path for the first time. Non-Schmid twinning behavior was observed in the first step compression, owing to the local stress fluctuations by neighboring twins; in contrast, Schmid's law well predicted the detwinning variants selection. This asymmetrical TDT behavior was first investigated to date related with the strong basal texture and loading path. Besides, with the progress of compression, Schmid factors for twinning demonstrated a decreasing tendency; however, those for detwinning during the second step displayed an abnormally increasing trend, fundamentally stemming from prior twinning behavior.

KW - Biaxial loading

KW - Mg-Li alloy

KW - Quasi-in-situ

KW - Twinning-detwinning

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Quasi-in-situ study on {10-12} twinning-detwinning behavior of rolled Mg-Li alloy in two-step compression (RD)-compression (ND) process

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Keywords

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