Deformation twinning-induced dynamic recrystallization during laser powder bed fusion

Hossein Eskandari Sabzi; Xiao Hui Li; Chi Zhang; Hanwei Fu; David San-Martín; Pedro E.J. Rivera-Díaz-del-Castillo

doi:10.1016/j.scriptamat.2021.114307

Deformation twinning-induced dynamic recrystallization during laser powder bed fusion

Hossein Eskandari Sabzi
, Xiao Hui Li
, Chi Zhang
, Hanwei Fu^*
, David San-Martín
, Pedro E.J. Rivera-Díaz-del-Castillo

^*此作品的通讯作者

材料科学与工程学院

Lancaster University
Beihang University
Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)
CSIC

科研成果: 期刊稿件 › 文章 › 同行评审

23 引用（Scopus）

摘要

Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature of such twins, which are formed due to the high strain rapid solidification inherent to LPBF. Dynamic recrystallization (DRX) was also activated during LPBF, and induced by the deformation nanotwins. A thermostatistical model is proposed to determine the critical conditions for twinning-induced DRX; the model is validated with the reported experimental results. This modelling approach offers a method to microstructurally engineer austenitic stainless steels for potential applications needing high strength and ductility.

源语言	英语
文章编号	114307
期刊	Scripta Materialia
卷	207
DOI	https://doi.org/10.1016/j.scriptamat.2021.114307
出版状态	已出版 - 15 1月 2022

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10.1016/j.scriptamat.2021.114307

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title = "Deformation twinning-induced dynamic recrystallization during laser powder bed fusion",

abstract = "Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature of such twins, which are formed due to the high strain rapid solidification inherent to LPBF. Dynamic recrystallization (DRX) was also activated during LPBF, and induced by the deformation nanotwins. A thermostatistical model is proposed to determine the critical conditions for twinning-induced DRX; the model is validated with the reported experimental results. This modelling approach offers a method to microstructurally engineer austenitic stainless steels for potential applications needing high strength and ductility.",

keywords = "Austenitic stainless steel, Dynamic recrystallization, Laser powder bed fusion, Transmission electron microscopy, Twinning",

author = "Sabzi, \{Hossein Eskandari\} and Li, \{Xiao Hui\} and Chi Zhang and Hanwei Fu and David San-Mart{\'i}n and Rivera-D{\'i}az-del-Castillo, \{Pedro E.J.\}",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s)",

year = "2022",

month = jan,

day = "15",

doi = "10.1016/j.scriptamat.2021.114307",

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}

TY - JOUR

T1 - Deformation twinning-induced dynamic recrystallization during laser powder bed fusion

AU - Sabzi, Hossein Eskandari

AU - Li, Xiao Hui

AU - Zhang, Chi

AU - Fu, Hanwei

AU - San-Martín, David

AU - Rivera-Díaz-del-Castillo, Pedro E.J.

PY - 2022/1/15

Y1 - 2022/1/15

N2 - Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature of such twins, which are formed due to the high strain rapid solidification inherent to LPBF. Dynamic recrystallization (DRX) was also activated during LPBF, and induced by the deformation nanotwins. A thermostatistical model is proposed to determine the critical conditions for twinning-induced DRX; the model is validated with the reported experimental results. This modelling approach offers a method to microstructurally engineer austenitic stainless steels for potential applications needing high strength and ductility.

AB - Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature of such twins, which are formed due to the high strain rapid solidification inherent to LPBF. Dynamic recrystallization (DRX) was also activated during LPBF, and induced by the deformation nanotwins. A thermostatistical model is proposed to determine the critical conditions for twinning-induced DRX; the model is validated with the reported experimental results. This modelling approach offers a method to microstructurally engineer austenitic stainless steels for potential applications needing high strength and ductility.

KW - Austenitic stainless steel

KW - Dynamic recrystallization

KW - Laser powder bed fusion

KW - Transmission electron microscopy

KW - Twinning

UR - https://www.scopus.com/pages/publications/85116002366

U2 - 10.1016/j.scriptamat.2021.114307

DO - 10.1016/j.scriptamat.2021.114307

M3 - 文章

AN - SCOPUS:85116002366

SN - 1359-6462

VL - 207

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 114307

ER -

Deformation twinning-induced dynamic recrystallization during laser powder bed fusion

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