Published September 2021 | Version v1
Journal article Metadata-only

Microstructure and mechanical property of Ti-5Al-5Mo-5V-3CR-1Zr alloy fabricated by selective laser melting with a preheated substrate

Creators

  • 1. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621900 (China)
  • 2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064 (China)
  • 3. Department of Materials, University of Manchester, Manchester, M13 9PL (United Kingdom)
  • 4. Department of Mechanical Engineering, College of Engineering, Shantou University, Shantou, 515063 (China)
  • 5. The Second Research Institute of Civil Aviation Administration of China (CAAC), Chengdu, 610064 (China)
  • 6. Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials, Beijing Aeronautical Science & Technology Research Institute of COMAC, Beijing, 102211 (China)

Description

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. (© 2021 Wiley‐VCH GmbH)

Availability note (English)

Available from: http://dx.doi.org/10.1002/adem.202100265

Additional details

Identifiers

DOI
10.1002/adem.202100265;

Publishing Information

Journal Title
Advanced Engineering Materials
Journal Volume
23
Journal Issue
9
Journal Page Range
p. 1-7
ISSN
1438-1656
CODEN
AENMFY

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
53065229
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM ALLOYS; MECHANICAL PROPERTIES; MELTING; MICROSTRUCTURE; MOLYBDENUM ALLOYS; TITANIUM BASE ALLOYS; VANADIUM ALLOYS; ZIRCONIUM ALLOYS
Descriptors DEC
ALLOYS; PHASE TRANSFORMATIONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
AID: 2100265