Mechanical properties and microstructural evolution of TA15 Ti alloy processed by selective laser melting before and after annealing

The article presents the results of selective laser melting of Ti-6Al-4V alloy. It was studied phase composition and microstructure of the initial powder material, the specimens manufactured by Selective Laser Melting and also the specimens after heat treatment. The effect of heat treatment on microstructure and mechanical properties of the specimens was shown. It was studied the mechanical behavior of the manufactured specimens before and after heat treatment at room and elevated temperatures as well. After heat treatment tests showed that the specimens have decent mechanical properties both at room and elevated temperatures.

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Process parameter optimization for selective laser melting of Inconel 718 superalloy and the effects of subsequent heat treatment on the microstructural evolution and mechanical properties

Journal of Manufacturing Processes ◽

10.1016/j.jmapro.2021.02.004 ◽

2021 ◽

Vol 64 ◽

pp. 530-543

Author(s):

Wenquan Wang ◽

Suyu Wang ◽

Xinge Zhang ◽

Fei Chen ◽

Yuxin Xu ◽

...

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Selective Laser Melting ◽

Microstructural Evolution ◽

Parameter Optimization ◽

Inconel 718 ◽

Process Parameter ◽

Laser Melting ◽

Process Parameter Optimization ◽

Inconel 718 Superalloy

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Effects of Homogenization Heat Treatment on Mechanical Properties of Inconel 718 Sandwich Structures Manufactured by Selective Laser Melting

Metals ◽

10.3390/met10050645 ◽

2020 ◽

Vol 10 (5) ◽

pp. 645 ◽

Cited By ~ 2

Author(s):

Sebastian Marian Zaharia ◽

Lucia Antoneta Chicoș ◽

Camil Lancea ◽

Mihai Alin Pop

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Selective Laser Melting ◽

Inconel 718 ◽

Mechanical Performance ◽

Sandwich Structures ◽

Laser Melting ◽

Homogenization Heat Treatment ◽

Finite Element Analysis Simulation ◽

Before And After

In this study, lightweight sandwich structures with honeycomb cores are proposed and their mechanical properties are investigated through experiments and FEA (finite element analysis) simulation. Sandwich structures were fabricated out of Inconel 718 using selective laser melting technique with two different topologies—sandwich structures with perforated skin (SSPS) and sandwich structures with perforated core (SSPC). In addition, the effect of the homogenization heat treatment on the mechanical properties of the sandwich samples subjected to compression and microhardness tests was analyzed. Results showed significant increases of mechanical performance before and after homogenization heat treatment of the Inconel 718 samples. Microstructure analysis was performed to compare the microstructures before and after homogenization heat treatment for Inconel 718 alloys manufactured by selective laser melting (SLM). The accuracy of experimental data were evaluated by modeling of sandwich samples in Ansys software at the end of this study.

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Microstructure and Mechanical Properties of Inconel 718 Produced by SLM and Subsequent Heat Treatment

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.651-653.665 ◽

2015 ◽

Vol 651-653 ◽

pp. 665-670 ◽

Cited By ~ 25

Author(s):

Anatoly A. Popovich ◽

Vadim Sh. Sufiiarov ◽

Igor A. Polozov ◽

Evgenii V. Borisov

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Selective Laser Melting ◽

Inconel 718 ◽

Elevated Temperatures ◽

Ductile Failure ◽

Mechanical Tests ◽

Laser Melting ◽

Microstructure And Mechanical Properties ◽

Before And After

The article presents results of selective laser melting of Inconel 718 superalloy. It was studied phase microstructure of the material obtained by selective laser melting and also the material after heat treatment. The phase composition of the initial powder material, the specimens after selective laser melting before and after heat treatment was studied. The effect of heat treatment on microstructure and mechanical properties of the specimens was shown. It was studied the mechanical behavior of the manufactured specimens before and after heat treatment at room and elevated temperatures as well. The results of impact tests and fractography of the specimens are presented. Mechanical tests showed that the specimens after heat treatment have decent mechanical properties comparable to hot-rolled material. Fractography showed that the obtained material is characterized by ductile failure mode with local elements of brittle fracture.

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