Evolution of structure and properties of heat-resistant nickel alloy after selective laser melting, hot isostatic pressing and heat treatment

2017 ◽  
pp. 77-82 ◽  
Author(s):  
V. Sh. Sufiiarov ◽  
◽  
A. A. Popovich ◽  
E. V. Borisov ◽  
I. A. Polozov ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Nickel Alloy ◽  
Selective Laser Melting ◽  
Hot Isostatic Pressing ◽  
Structure And Properties ◽  
Laser Melting ◽  
Isostatic Pressing ◽  
Heat Resistant ◽  
Evolution Of Structure

Structure and Properties of EP741NP Heat-Resistant Nickel Alloy Produced by Selective Laser Melting

2021 ◽  
Vol 62 (3) ◽  
pp. 302-310
Author(s):  
F. A. Baskov ◽  
Zh. A. Sentyurina ◽  
I. A. Logachev ◽  
M. Ya. Bychkova ◽  
A. I. Logacheva
Keyword(s):  
Nickel Alloy ◽  
Selective Laser Melting ◽  
Structure And Properties ◽  
Laser Melting ◽  
Heat Resistant

Investigation of Functional Graded Steel Parts Produced by Selective Laser Melting

2019 ◽  
Vol 822 ◽  
pp. 563-568
Author(s):  
Vadim Sufiiarov ◽  
Evgenii Borisov ◽  
Igor A. Polozov
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Stainless Steel ◽  
Additive Manufacturing ◽  
Selective Laser Melting ◽  
Transition Layer ◽  
Hot Isostatic Pressing ◽  
Structure And Properties ◽  
Stainless Steel 316L ◽  
Laser Melting

The article presents the results of a study on the additive manufacturing of functional graded steel parts. Studies have been carried out on the possibility of growing blanks from two steels simultaneously – tool steel H13 and stainless steel 316L. The study of the microstructure of the transition from one steel to another showed that the transition layer is smooth and is about 200 microns thick. The mechanical properties in the transition layer are distributed over the gradient and smoothly change from one material to another. The structure and properties of the transition layer after heat treatment and hot isostatic pressing are shown.

scholarly journals Microstructure and Mechanical Properties of Ti-6Al-4V Manufactured by Selective Laser Melting after Stress Relieving, Hot Isostatic Pressing Treatment, and Post-Heat Treatment

2021 ◽  
Author(s):  
Naeem Eshawish ◽  
Savko Malinov ◽  
Wei Sha ◽  
Patrick Walls
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Selective Laser Melting ◽  
Thermal Stresses ◽  
Fatigue Testing ◽  
Hot Isostatic Pressing ◽  
Thermal Conditions ◽  
Laser Melting ◽  
Isostatic Pressing ◽  
Stress Relieving

AbstractAdditive manufacturing (AM) is defined as a technology performed for tooling applications. It is used for manufacturing tools that have complex shapes and figures. In this study, an extensively applied Ti-6Al-4V alloy was made using the selective laser melting method. Post-production heat treatments were applied to decrease thermal stresses and to enhance the mechanical properties and the microstructure. The study investigates the fatigue mechanical properties, microstructure, hardness, and porosity of the AM Ti-6Al-4V after stress relieving (SR) and after SR followed by hot isostatic pressing (HIP). The samples’ upper and lower parts were independently examined to determine the effects of thermal conditions and the heat treatment of the microstructure. The microstructures were examined through optical microscopy, scanning electron microscopy and x-ray diffraction methods. The mechanical properties were investigated through microhardness testing, alongside assessment by fatigue testing at room temperature. The findings demonstrated that the microstructure after SR at 704 °C for 2 h is 100% fine martensitic α'-Ti, with a microhardness value of 408 HV. Air and furnace cooled samples have a more homogenous structure and are characterised by mixture (α + β) with microhardness values of 382 and 356 HV, respectively. After HIP at 920 °C and 100 MPa for 2 h was applied, the martensite was converted into a lamellar (α + β) microstructure, whereby the α phase is presented as fine needles situated among the β ridges in the microstructure, with the existence of the prior β grain boundary.

Effect of hot isostatic pressing on structure and properties of intermetallic NiAl–Cr–Mo alloy produced by selective laser melting

2020 ◽  
Vol 120 ◽  
pp. 106766 ◽  
Author(s):  
M. Khomutov ◽  
P. Potapkin ◽  
V. Cheverikin ◽  
P. Petrovskiy ◽  
A. Travyanov ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Hot Isostatic Pressing ◽  
Structure And Properties ◽  
Laser Melting ◽  
Isostatic Pressing
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