Published February 2021 | Version v1
Journal article Metadata-only

The effect of Hf on solidification cracking inhibition of IN738LC processed by Selective Laser Melting

Creators

  • 1. School of Materials Science and Engineering, Southeast University, Nanjing (China)
  • 2. Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials, Shenzhen, 518055 (China)
  • 3. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055 (China)

Description

The effects of Hf addition on defects and mechanical properties of the "hard-to-weld" superalloy IN738LC manufactured by Selective Laser Melting (SLM) process were studied. The addition of Hf inhibits cracking in SLMed IN738LC. Cracking free and low porosity IN738LC parts were obtained in a wide range of process parameters. The study shows that the cracks were refilled by Hf-riched melt and the relative density was increased, thus the tensile properties at 700 and 850 °C were improved.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.msea.2021.140733

Additional details

Identifiers

DOI
10.1016/j.msea.2021.140733;
PII
S0921509321000022;

Publishing Information

Journal Title
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Journal Volume
804
Journal Page Range
vp.
ISSN
0921-5093
CODEN
MSAPE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54036991
Subject category
S36: MATERIALS SCIENCE; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
3D PRINTING; CRACKING; DENSITY; DESIGN; HEAT RESISTING ALLOYS; HYDROFLUORIC ACID; LASERS; POROSITY; POWDERS; SOLIDIFICATION; TENSILE PROPERTIES; WELDED JOINTS
Descriptors DEC
ALLOYS; CHEMICAL REACTIONS; COMPUTER-AIDED FABRICATION; DECOMPOSITION; FABRICATION; FLUORINE COMPOUNDS; HALOGEN COMPOUNDS; HEAT RESISTANT MATERIALS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; JOINTS; MATERIALS; MECHANICAL PROPERTIES; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; PYROLYSIS; THERMOCHEMICAL PROCESSES

Optional Information

Copyright
Copyright (c) 2021 Elsevier B.V. All rights reserved.