Deciphering the transformation pathway in laser powder-bed fusion additive manufacturing of Ti-6Al-4V alloy

J Chen, D Fabijanic, T Zhang, EW Lui, M Brandt… - Additive …, 2022 - Elsevier
The nature of rapid cyclic heating and cooling in metal additive manufacturing poses a great
challenge in the control of microstructure while a metallic part is being built. With metastable …

Variant selection, coarsening behavior of α phase and associated tensile properties in an α+ β titanium alloy

L Lei, Q Zhao, C Wu, Y Zhao, S Huang, W Jia… - Journal of Materials …, 2022 - Elsevier
Abstract Effect of cooling rates, ie, air cooling and furnace cooling, after solution in α+ β
phase-field on variant selection, coarsening behavior of α phase and microstructure …

Realizing superior ductility of selective laser melted Ti-6Al-4V through a multi-step heat treatment

CL Li, JK Hong, PL Narayana, SW Choi, SW Lee… - Materials Science and …, 2021 - Elsevier
The use of selective laser melting (SLM) has become more common with regard to the
fabrication of high-strength Ti-6Al-4V components. However, the as-SLMed Ti-6Al-4V alloy …

Achieving superior fatigue strength in a powder-metallurgy titanium alloy via in-situ globularization during hot isostatic pressing

RP Guo, M Cheng, CJ Zhang, JW Qiao, C Cai… - Scripta Materialia, 2023 - Elsevier
Powder-metallurgy (PM) titanium alloys exhibit outstanding quasistatic-mechanical
properties, but suffer from low fatigue performance, which severely limits their applications in …

Research on the influence of heat treatment on residual stress of TC4 alloy produced by laser additive manufacturing based on laser ultrasonic technique

Y Zhan, H Xu, W Du, C Liu - Ultrasonics, 2021 - Elsevier
During the laser additive manufacturing (LAM) process large temperature gradients can lead
to high level of residual stress. The residual stress can have irreversible effects such as …

Stress-sensitive fatigue crack initiation mechanisms of coated titanium alloy

Y Bai, T Guo, J Wang, J Gao, K Gao, X Pang - Acta Materialia, 2021 - Elsevier
The presence of hard coatings can reduce the fatigue life of metal substrates to an
unacceptable level, causing the catastrophic failure of load-bearing structures …

In-situ XRD study on the effects of stress relaxation and phase transformation heat treatments on mechanical and microstructural behaviour of additively manufactured …

FR Kaschel, RK Vijayaraghavan, PJ McNally… - Materials Science and …, 2021 - Elsevier
Abstract Additively Manufactured (AM) titanium (Ti) components are routinely post-thermal
heat treated (HT), to reduce internal stresses, as well as to obtain more desirable …

Enhanced high temperature performance of two-scale network-structured (TiB+ Ti5Si3)/TA15 composites by simultaneous adjustment of matrix and nano-scaled …

L Li, K Wang, D Wang, Q An, G Liu - Materials Science and Engineering: A, 2024 - Elsevier
To improve the high temperature performance of the titanium matrix composite, solution and
aging treatments were carried out on the (TiB+ Ti 5 Si 3)/TA15 composite with a two-scale …

Effect of hot isostatic pressing on the microstructure and mechanical properties of 17-4PH stainless steel parts fabricated by selective laser melting

Q Shi, F Qin, K Li, X Liu, G Zhou - Materials Science and Engineering: A, 2021 - Elsevier
4PH stainless steel parts, fabricated by selective laser melting, were subjected to the
solution and aging treatments conducted under vacuum and hot isostatic pressing (HIP) …

Correlation between microstructures and tensile deformation behavior of a PM near α Ti–6Al–2Sn–4Zr–2Mo− 0.1 Si alloy

X Wu, B Zhang, Y Zhang, H Niu, D Zhang - Materials Science and …, 2021 - Elsevier
A powder metallurgy (PM) near α Ti–6Al–2Sn–4Zr–2Mo− 0.1 Si (wt.%) alloy was fabricated
by in-situ dehydrogenation and hot extrusion of a TiH 2-based powder compact and heat …