Evolution of Microstructure, Residual Stress, and Tensile Properties of Additively Manufactured Stainless Steel Under Heat Treatments

Xinchang ZHANG; Michael D. MCMURTREY; Liang WANG; Robert C. O’BRIEN; Ching-Heng SHIAU; Yun WANG; Randall SCOTT; Yang REN; Cheng SUN

doi:10.1007/s11837-020-04433-9

Author(s)

Xinchang ZHANG
Michael D. MCMURTREY
Liang WANG
Robert C. O’BRIEN
Ching-Heng SHIAU
Yun WANG
Randall SCOTT
Cheng SUN

Detail(s)

Original language	English
Pages (from-to)	4167-4177
Journal / Publication	JOM
Volume	72
Issue number	12
Online published	3 Nov 2020
Publication status	Published - Dec 2020
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1007/s11837-020-04433-9 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85094975988&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(247eb27c-0037-4de5-93f8-7128332e33b6).html

Abstract

This study investigated the microstructure, residual stress, and tensile properties of directed energy deposited stainless steel 316L (SS316L) under thermal annealing. Microstructure characterization shows the as-printed sample has laser-generated patterns where dendritic structure is observed at the edge of the patterns and cellular structure dominates the interior region. The thermal annealing at 983 and 1093°C effectively removes the dendritic/cellular structures. Synchrotron x-ray diffraction reveals that the as-printed SS316L exhibits compressive residual stress of − 197.4 MPa, which is greatly relieved to − 53.8 MPa after annealing at 1093°C. The room temperature tensile testing indicates that the yield strength and ultimate tensile strength drop from 378 MPa and 502 MPa in the as-printed sample to 258 MPa and 446 MPa in the annealed samples (1093°C), respectively. Our study provides insights into the relationship among microstructure, residual stress, and tensile properties of laser additive manufactured SS316L.

Citation Format(s)

[ RIS ] [ BibTeX ]

Evolution of Microstructure, Residual Stress, and Tensile Properties of Additively Manufactured Stainless Steel Under Heat Treatments. / ZHANG, Xinchang; MCMURTREY, Michael D.; WANG, Liang et al.
In: JOM, Vol. 72, No. 12, 12.2020, p. 4167-4177.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

ZHANG, X, MCMURTREY, MD, WANG, L, O’BRIEN, RC, SHIAU, C-H, WANG, Y, SCOTT, R, REN, Y & SUN, C 2020, 'Evolution of Microstructure, Residual Stress, and Tensile Properties of Additively Manufactured Stainless Steel Under Heat Treatments', JOM, vol. 72, no. 12, pp. 4167-4177. https://doi.org/10.1007/s11837-020-04433-9

ZHANG, X., MCMURTREY, M. D., WANG, L., O’BRIEN, R. C., SHIAU, C.-H., WANG, Y., SCOTT, R., REN, Y., & SUN, C. (2020). Evolution of Microstructure, Residual Stress, and Tensile Properties of Additively Manufactured Stainless Steel Under Heat Treatments. JOM, 72(12), 4167-4177. https://doi.org/10.1007/s11837-020-04433-9

ZHANG X, MCMURTREY MD, WANG L, O’BRIEN RC, SHIAU CH, WANG Y et al. Evolution of Microstructure, Residual Stress, and Tensile Properties of Additively Manufactured Stainless Steel Under Heat Treatments. JOM. 2020 Dec;72(12):4167-4177. Epub 2020 Nov 3. doi: 10.1007/s11837-020-04433-9

ZHANG, Xinchang ; MCMURTREY, Michael D. ; WANG, Liang et al. / Evolution of Microstructure, Residual Stress, and Tensile Properties of Additively Manufactured Stainless Steel Under Heat Treatments. In: JOM. 2020 ; Vol. 72, No. 12. pp. 4167-4177.