DataVXAdvanced Engineering MaterialsPaper
journal article·2021-09

Microstructure and Mechanical Property of Ti–5Al–5Mo–5V–3Cr–1Zr Alloy Fabricated by Selective Laser Melting with a Preheated Substrate

Hao Deng, Wenbin Qiu, Longqing Chen, Sheng Cao, Yongqiang Wei, Zhendong Hu, Xuidong Cui, Jun Tang

Advanced Engineering Materials· Volume 23· Issue 9
Publisher page
Source abstract

Abstract

The high solidification rate of selective laser melting (SLM) induces a nonequilibrium microstructure in as‐fabricated Ti alloys. Herein, a metastable β Ti–5Al–5Mo–5V–3Cr–1Zr alloy is successfully fabricated by SLM on a preheated substrate at 700 °C. The effects of preheating temperature on microstructure and mechanical properties of as‐fabricated specimens is systematically studied. The phase identification and electron microscopic results demonstrate that the 700 °C preheating temperature enables the transformation of metastable β structure into an α + β structure with massive amounts of nanosized α precipitates. Consequently, the SLM‐fabricated specimen after preheating process possesses higher ultimate tensile strength and hardness at 1440 MPa and 8.24 GPa, respectively. This work shows an alternative for SLM to tackle nonequilibrium microstructure and to increase the strength of metastable Ti alloys by introducing high temperature preheating.
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Research context

Metals & alloysNanomaterials

OpenAlex topics: Additive Manufacturing Materials and Processes · Titanium Alloys Microstructure and Properties · High Entropy Alloys Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology Sichuan University Chengdu 610064 China

Institute of Chemical Materials China Academy of Engineering Physics Mianyang 621900 China

Department of Mechanical Engineering College of Engineering Shantou University Shantou 515063 China

Department of Materials University of Manchester Oxford Road Manchester M13 9PL UK

The Second Research Institute of Civil Aviation Administration of China (CAAC) Chengdu 610064 China

Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials Beijing Aeronautical Science & Technology Research Institute of COMAC Beijing 102211 China

Funding

Department of Science and Technology of Sichuan Province

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