Effects of heat treatment on microstructure and mechanical properties of wire arc additively manufactured Hastelloy C276 alloy
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Date
2022-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
Materials Australian and The Australian Ceramic Society
Abstract
Hastelloy C276 is a Ni-Cr-Mo based superalloy which has a high potential for application in high
temperature and extreme corrosive environment due to its high corrosion resistance and excellent
mechanical properties. In this research, the wire arc additive manufacturing (WAAM) process was
successfully used to fabricate the defect-free Hastelloy C276 component. The microstructure of
the component was characterized using optical microscopy, scanning electron microscopy (SEM)
equipped with energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy
(TEM), and X-ray diffraction, the mechanical properties were evaluated via tensile and hardness
tests. The as-deposited component exhibited anisotropy on both microstructure and mechanical
properties. The influences of solid solution heat treatment and stress relief heat treatment on
microstructure and mechanical properties were also investigated. It was found that both
microstructure and mechanical properties were significantly modified after heat treatment.
Preliminary creep tests indicted the texture has a strong influence on the creep performance of the
component.
Description
Keywords
Heat, Microstructure, Mechanical properties, Hastelloys, Scanning electron microscopy, Corrosion, Transmission electron microscopy, X-ray diffraction, Creep
Citation
Qui, Z., Wu, Q., Zhu, H., Wang, Z., Wexler, D., Van Duin, S., Pan, Z., & Li, H. (2022). Effects of heat treatment on microstructure and mechanical properties of wire arc additively manufactured Hastelloy C276 alloy. Paper presented to CAMS 2022 Advancing Materials and Manufacting, The University of Melbourne, 1st - 3rd June 2022.