Influence of heat treatment on the microstructure evolution and elevated temperature mechanical properties of Hastelloy-X processed by laser directed energy deposition

2021 ◽  
Vol 868 ◽  
pp. 159207
Author(s):  
A.N. Jinoop ◽  
C.P. Paul ◽  
J. Ganesh Kumar ◽  
V. Anilkumar ◽  
R. Singh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Elevated Temperature ◽  
Microstructure Evolution ◽  
Energy Deposition ◽  
Hastelloy X ◽  
Directed Energy Deposition ◽  
Directed Energy

scholarly journals Mechanical Properties of Tool Steels with High Wear Resistance via Directed Energy Deposition

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 282 ◽  
Author(s):  
Gyeong Yun Baek ◽  
Gwang Yong Shin ◽  
Ki Yong Lee ◽  
Do Sik Shim
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Energy Deposition ◽  
High Wear Resistance ◽  
Matrix Microstructure ◽  
Microstructure Observation ◽  
Directed Energy Deposition ◽  
Directed Energy ◽  
Post Deposition

This study focused on the mechanical and metallurgical characteristics of high-wear-resistance steel (HWS) deposited using directed energy deposition (DED) for metal substrate hardfacing or repairing. As post-deposition heat treatment changes the metallurgical characteristics of deposits, the effect of post-deposition heat treatment on the mechanical properties was investigated via microstructure observation and by conducting hardness, wear, and impact tests. The obtained micro-images showed that the deposited HWS layers exhibit cellular and columnar dendrites, and the microstructure of heat-treated HWS (HT-HWS) transformed its phase during quenching and tempering. The hardness and wear resistance of the HT-HWS deposits were higher than those of the HWS deposited specimen, whereas the latter exhibited a higher fracture toughness. The matrix microstructure and carbide characteristics, which are characterized by the chemical composition of the materials, significantly influenced the mechanical properties.

Towards controlling intrinsic heat treatment of maraging steel during laser directed energy deposition

2021 ◽  
Vol 201 ◽  
pp. 113973
Author(s):  
Sasan Amirabdollahian ◽  
Faraz Deirmina ◽  
Luke Harris ◽  
Raveendra Siriki ◽  
Massimo Pellizzari ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Maraging Steel ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy
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