Affordable Access

Access to the full text

Influence of Building Direction on the Oxidation Behavior of Inconel 718 Alloy Fabricated by Additive Manufacture of Electron Beam Melting

Authors
  • Li, Lv
  • Gong, Xiaojuan1
  • Ye, Xianjue1
  • Teng, Jianwei1
  • Nie, Yan
  • Li, Yunping1
  • Lei, Qian1
  • 1 (J.T.)
Type
Published Article
Journal
Materials
Publisher
MDPI AG
Publication Date
Dec 14, 2018
Volume
11
Issue
12
Identifiers
DOI: 10.3390/ma11122549
PMID: 30558172
PMCID: PMC6316576
Source
PubMed Central
Keywords
License
Green

Abstract

This research was aimed at investigating the high temperature oxidation behavior of Inconel 718 superalloy fabricated by electron beam melting with the building direction of 0°, 55° and 90° deviation from the Z axis of cylindrical samples. Columnar γ-fcc phase with preferred crystal orientations was found in all specimens. With the temperature ranging from 700 to 1000 °C, the 0° sample, symbolized by the lowest grain boundary density, and largest grain size, reveals the best oxidation performance. It is concluded that the building direction has more impact on the amount of grain boundary density than crystal orientation, which determined the oxidation resistance.

Report this publication

Statistics

Seen <100 times