Kong, W., Shi, Q., Cox, S. C., Kuang, M. and Attallah, M. M. (2022) Microstructure, tensile properties of SLMed TNT5Zr-0.2O alloys without/with keyholes produced by different Post-processing treatments. Materials Letters, 309, 131448. (doi: 10.1016/j.matlet.2021.131448)
Full text not currently available from Enlighten.
Abstract
Ti-34Nb-13Ta-5Zr-0.2O alloy (hereafter termed TNT5Zr-0.2O) with keyhole defects was fabricated by SLM. The microstructure and tensile properties have been investigated after two post-processing treatments, namely vacuum heat treatment (HT) and hot isostatic pressing (HIP). Microstructure shows both alloys retain beta grain matrix along with discrete nano-sized grain boundary alpha precipitates. The stress concentrations at the edge of keyholes make the voids wall collapse under tension and cracks propagate more easily in that region. Notably, the pore enclosure by HIP is not contribute to a better ductility of this alloy. This explains why the TNT5Zr-0.2O-HT alloy possesses lower UTS (978 ± 19 MPa) and elastic modulus (49 ± 3 GPa), but higher elongation (4.5% ± 0.6%) in comparison with TNT5Zr-0.2O-HIP sample.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Kong, Dr Weihuan |
| Authors: | Kong, W., Shi, Q., Cox, S. C., Kuang, M., and Attallah, M. M. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Materials Letters |
| Publisher: | Elsevier |
| ISSN: | 0167-577X |
| ISSN (Online): | 1873-4979 |
| Published Online: | 08 December 2021 |
University Staff: Request a correction | Enlighten Editors: Update this record
Deposit and Record Details
Deposit and Record Details