Next Article in Journal
Bending and Torsion Fatigue-Testing Machine Developed for Multiaxial Non-Proportional Loading
Previous Article in Journal
Extraction of Mn from Black Copper Using Iron Oxides from Tailings and Fe2+ as Reducing Agents in Acid Medium
Previous Article in Special Issue
Comparison of Hot Cracking Susceptibility of TIG and Laser Beam Welded Alloy 718 by Varestraint Testing
Open AccessArticle

Varestraint Testing of Selective Laser Additive Manufactured Alloy 718—Influence of Grain Orientation

Department of Engineering Science, University West, 461 32 Trollhättan, Sweden
*
Author to whom correspondence should be addressed.
Metals 2019, 9(10), 1113; https://doi.org/10.3390/met9101113
Received: 6 September 2019 / Revised: 9 October 2019 / Accepted: 16 October 2019 / Published: 18 October 2019
(This article belongs to the Special Issue Welding Metallurgy and Weldability of Superalloys)
The effect of grain orientation on hot cracking susceptibility of selective laser additive manufactured Alloy 718 was investigated by Varestraint testing. Electron backscattered diffraction showed that cracks in heat affected zone (HAZ) of the welded samples occurred in high angle grain boundaries. The extent of HAZ cracking was smaller in samples tested parallel to the elongated grain orientation and larger in samples transverse to the elongated grain orientation. However, for solidification cracking in the weld metal, no significant difference with respect to grain orientation in the base metal was found. View Full-Text
Keywords: selective laser melting; Alloy 718; grain orientation; Varestraint testing; hot cracking selective laser melting; Alloy 718; grain orientation; Varestraint testing; hot cracking
Show Figures

Figure 1

MDPI and ACS Style

Raza, T.; Andersson, J.; Svensson, L.-E. Varestraint Testing of Selective Laser Additive Manufactured Alloy 718—Influence of Grain Orientation. Metals 2019, 9, 1113.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop