Heterogeneous slip localization in an additively manufactured 316L stainless steel

C. Bean; F. Wang; M. A. Charpagne; P. Villechaise; V. Valle; S. R. Agnew; D. S. Gianola; T. M. Pollock; J. C. Stinville

doi:10.1016/j.ijplas.2022.103436

Heterogeneous slip localization in an additively manufactured 316L stainless steel

C. Bean, F. Wang, M. A. Charpagne, P. Villechaise, V. Valle, S. R. Agnew, D. S. Gianola, T. M. Pollock, J. C. Stinville

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

Abstract

Additively manufactured 316L stainless steels display significantly higher yield strength than their as-cast or wrought counterparts. This is associated with the micro-scale cellular structure and complex grain and sub-grain structure, resulting from high cooling rates occurring during the additive manufacturing process. The consequences of these peculiar microstructural features on plastic localization early in the plastic regime at the sub-grain scale are investigated. The plastic localization involved during monotonic deformation of conventional and additive manufactured 316L stainless steels is investigated using high-resolution digital image correlation. Significant heterogeneous slip localization is observed in the additively manufactured 316L stainless steels compared to the wrought 316L stainless steels. The cellular structure and low-angle grain boundaries are observed to control the incipient plasticity. In addition, slip localization characteristics indicate that the additional strengthening in the AM material is mainly related to the cellular structure acting as a dislocation forest-type obstacle.

Original language	English (US)
Article number	103436
Journal	International journal of plasticity
Volume	159
DOIs	https://doi.org/10.1016/j.ijplas.2022.103436
State	Published - Dec 2022

Keywords

Additively manufactured 316L stainless steel
High-resolution digital image correlation
Plastic localization
Scanning electron microscopy digital image correlation
Slip localization

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

Online availability

10.1016/j.ijplas.2022.103436

Library availability

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title = "Heterogeneous slip localization in an additively manufactured 316L stainless steel",

abstract = "Additively manufactured 316L stainless steels display significantly higher yield strength than their as-cast or wrought counterparts. This is associated with the micro-scale cellular structure and complex grain and sub-grain structure, resulting from high cooling rates occurring during the additive manufacturing process. The consequences of these peculiar microstructural features on plastic localization early in the plastic regime at the sub-grain scale are investigated. The plastic localization involved during monotonic deformation of conventional and additive manufactured 316L stainless steels is investigated using high-resolution digital image correlation. Significant heterogeneous slip localization is observed in the additively manufactured 316L stainless steels compared to the wrought 316L stainless steels. The cellular structure and low-angle grain boundaries are observed to control the incipient plasticity. In addition, slip localization characteristics indicate that the additional strengthening in the AM material is mainly related to the cellular structure acting as a dislocation forest-type obstacle.",

keywords = "Additively manufactured 316L stainless steel, High-resolution digital image correlation, Plastic localization, Scanning electron microscopy digital image correlation, Slip localization",

author = "C. Bean and F. Wang and Charpagne, {M. A.} and P. Villechaise and V. Valle and Agnew, {S. R.} and Gianola, {D. S.} and Pollock, {T. M.} and Stinville, {J. C.}",

note = "J.C.S is grateful for financial support from the Energy & Biosciences Institute (EBI), USA through the EBI-Shell Program. T.M.P acknowledges the support of a Department of Defense Vannevar Bush Fellowship, USA , DNR Grant N00014-18-1-3031 . DSG acknowledges partial support by the Materials Research Science and Engineering Center (MRSEC), USA DMR 1720256 through IRG-1. This work was carried out at the California NanoSystems Institute at the University of California Santa Barbara and in the Materials Research Laboratory Central Research Facilities, University of Illinois.",

year = "2022",

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doi = "10.1016/j.ijplas.2022.103436",

language = "English (US)",

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journal = "International journal of plasticity",

issn = "0749-6419",

publisher = "Elsevier Ltd",

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T1 - Heterogeneous slip localization in an additively manufactured 316L stainless steel

AU - Bean, C.

AU - Wang, F.

AU - Charpagne, M. A.

AU - Villechaise, P.

AU - Valle, V.

AU - Agnew, S. R.

AU - Gianola, D. S.

AU - Pollock, T. M.

AU - Stinville, J. C.

N1 - J.C.S is grateful for financial support from the Energy & Biosciences Institute (EBI), USA through the EBI-Shell Program. T.M.P acknowledges the support of a Department of Defense Vannevar Bush Fellowship, USA , DNR Grant N00014-18-1-3031 . DSG acknowledges partial support by the Materials Research Science and Engineering Center (MRSEC), USA DMR 1720256 through IRG-1. This work was carried out at the California NanoSystems Institute at the University of California Santa Barbara and in the Materials Research Laboratory Central Research Facilities, University of Illinois.

PY - 2022/12

Y1 - 2022/12

N2 - Additively manufactured 316L stainless steels display significantly higher yield strength than their as-cast or wrought counterparts. This is associated with the micro-scale cellular structure and complex grain and sub-grain structure, resulting from high cooling rates occurring during the additive manufacturing process. The consequences of these peculiar microstructural features on plastic localization early in the plastic regime at the sub-grain scale are investigated. The plastic localization involved during monotonic deformation of conventional and additive manufactured 316L stainless steels is investigated using high-resolution digital image correlation. Significant heterogeneous slip localization is observed in the additively manufactured 316L stainless steels compared to the wrought 316L stainless steels. The cellular structure and low-angle grain boundaries are observed to control the incipient plasticity. In addition, slip localization characteristics indicate that the additional strengthening in the AM material is mainly related to the cellular structure acting as a dislocation forest-type obstacle.

AB - Additively manufactured 316L stainless steels display significantly higher yield strength than their as-cast or wrought counterparts. This is associated with the micro-scale cellular structure and complex grain and sub-grain structure, resulting from high cooling rates occurring during the additive manufacturing process. The consequences of these peculiar microstructural features on plastic localization early in the plastic regime at the sub-grain scale are investigated. The plastic localization involved during monotonic deformation of conventional and additive manufactured 316L stainless steels is investigated using high-resolution digital image correlation. Significant heterogeneous slip localization is observed in the additively manufactured 316L stainless steels compared to the wrought 316L stainless steels. The cellular structure and low-angle grain boundaries are observed to control the incipient plasticity. In addition, slip localization characteristics indicate that the additional strengthening in the AM material is mainly related to the cellular structure acting as a dislocation forest-type obstacle.

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Heterogeneous slip localization in an additively manufactured 316L stainless steel

Abstract

Keywords

ASJC Scopus subject areas

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