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Deformation behavior, twinning propensity model, and twinnability map for laser powder bed fused austenitic steel homogenized by hot isostatic pressing

文献类型：期刊论文

作者Zhang, Hongzhuang3; Cao, Shujie3; Li, Bing3; Berto, Filippo2; Qian GA(钱桂安)1; Li, Changyou3
刊名INTERNATIONAL JOURNAL OF PLASTICITY
出版日期2024-04-01
卷号175页码:25
关键词Laser powder bed fusion Austenitic steel Deformation behavior Twinning model Hot isostatic pressing
ISSN号0749-6419
DOI10.1016/j.ijplas.2024.103940
通讯作者Zhang, Hongzhuang(zhanghz@mail.neu.edu.cn) ; Qian, Guian(qianguian@imech.ac.cn)
英文摘要Hot isostatic pressing (HIP) has emerged as a highly effective and extensively adopted technique for eliminating intrinsic flaws, mitigating residual stress, and addressing microstructural anisotropy in laser powder bed fused (L-PBF) metallic materials. However, the deformation behavior, strengthening mechanism, and associated mechanistic models of HIPed l-PBF austenitic steel remain largely unclear. Through multiple microstructural characterizations, this study determined that the primary deformation mechanism of HIPed l-PBF austenitic steel involved the emission of twinning partials from either the annealing twin boundaries or high-angle grain boundaries (HAGBs) with the decoration of extra dislocations and prismatic inclusions. A twinning propensity model was formulated based on the identified deformation mechanisms, revealing that the critical angle (theta tau-crit) for twinning partial emissions ranged from 25.64 degrees to 28.46 degrees By incorporating the mathematical relationship describing the force equilibrium state between trailing and twinning partials, a twinnability map considering both the crystallographic orientation and stress state (magnitude and direction) was established to guide the twinning control for desired mechanical properties. Finally, the accuracy of the twinning model and twinnability map was effectively confirmed using the microstructural results, whereas the limitations of the twinning model and twinnability map were reasonably examined through microdefect and texture analysis. The results of this study provided a significant theoretical framework for understanding the twinning behavior of high-performance and homogeneous l-PBF metallic materials.
分类号一类
WOS关键词STACKING-FAULT ENERGIES ; 304L STAINLESS-STEEL ; MECHANICAL-PROPERTIES ; INDUCED PLASTICITY ; HEAT-TREATMENT ; INCONEL 718 ; GRAIN-SIZE ; NUCLEATION ; EVOLUTION ; STRENGTH
资助项目Opening fund of State Key Laboratory of Nonlinear Mechanics ; National Natural Science Foundation of China[12272090] ; National Natural Science Foundation of China[12072345] ; National Natural Science Foundation of China[11932020] ; National Science and Technology Major Project ; Science Center for Gas Turbine Project ; Fundamental Research Funds for the Central Universities[P2022-B-III-008-001] ; [N2003006] ; [J2019-VI-0012-0126]
WOS研究方向Engineering ; Materials Science ; Mechanics
语种英语
WOS记录号WOS:001209797000001
资助机构Opening fund of State Key Laboratory of Nonlinear Mechanics ; National Natural Science Foundation of China ; National Science and Technology Major Project ; Science Center for Gas Turbine Project ; Fundamental Research Funds for the Central Universities
其他责任者Zhang, Hongzhuang ; Qian, Guian
源URL[http://dspace.imech.ac.cn/handle/311007/95025]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
2.Sapienza Univ Rome, Dept Chem Engn Mat Environm, I-00184 Rome, Italy;
3.Northeastern Univ, Sch Mech Engn & Automation, Shenyang 110819, Peoples R China;
推荐引用方式
GB/T 7714		 Zhang, Hongzhuang,Cao, Shujie,Li, Bing,et al. Deformation behavior, twinning propensity model, and twinnability map for laser powder bed fused austenitic steel homogenized by hot isostatic pressing[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2024,175:25.
APA Zhang, Hongzhuang,Cao, Shujie,Li, Bing,Berto, Filippo,钱桂安,&Li, Changyou.(2024).Deformation behavior, twinning propensity model, and twinnability map for laser powder bed fused austenitic steel homogenized by hot isostatic pressing.INTERNATIONAL JOURNAL OF PLASTICITY,175,25.
MLA Zhang, Hongzhuang,et al."Deformation behavior, twinning propensity model, and twinnability map for laser powder bed fused austenitic steel homogenized by hot isostatic pressing".INTERNATIONAL JOURNAL OF PLASTICITY 175(2024):25.

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来源：力学研究所

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