Room and high temperature high-cycle fatigue properties of inconel 718 superalloy prepared using laser directed energy deposition

2021 ◽  
pp. 141865
Author(s):  
Xiaobin Yu ◽  
Xin Lin ◽  
Zihong Wang ◽  
Shuya Zhang ◽  
Xuehao Gao ◽  
...  
Keyword(s):  
High Temperature ◽  
Inconel 718 ◽  
Energy Deposition ◽  
High Cycle Fatigue ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Directed Energy Deposition ◽  
Inconel 718 Superalloy ◽  
Directed Energy

scholarly journals Fatigue Assessment of Inconel 625 Produced by Directed Energy Deposition from Miniaturized Specimens

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 156
Author(s):  
Felipe Klein Fiorentin ◽  
Duarte Maciel ◽  
Jorge Gil ◽  
Miguel Figueiredo ◽  
Filippo Berto ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Energy Deposition ◽  
High Cycle Fatigue ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Inconel 625 ◽  
Cycle Fatigue ◽  
Directed Energy Deposition ◽  
Metallic Additive ◽  
Directed Energy

In recent years, the industrial application of Inconel 625 has grown significantly. This material is a nickel-base alloy, which is well known for its chemical resistance and mechanical properties, especially in high-temperature environments. The fatigue performance of parts produced via Metallic Additive Manufacturing (MAM) heavily rely on their manufacturing parameters. Therefore, it is important to characterize the properties of alloys produced by a given set of parameters. The present work proposes a methodology for characterization of the mechanical properties of MAM parts, including the material production parametrization by Laser Directed Energy Deposition (DED). The methodology consists of the testing of miniaturized specimens, after their production in DED, supported by a numerical model developed and validated by experimental data for stress calculation. An extensive mechanical characterization, with emphasis on high-cycle fatigue, of Inconel 625 produced via DED is herein discussed. The results obtained using miniaturized specimens were in good agreement with standard-sized specimens, therefore validating the applied methodology even in the case of some plastic effects. Regarding the high-cycle fatigue properties, the samples produced via DED presented good fatigue performance, comparable with other competing Metallic Additive Manufactured (MAMed) and conventionally manufactured materials.

scholarly journals Excellent superelasticity in a Co-Ni-Ga high-temperature shape memory alloy processed by directed energy deposition

2020 ◽  
Vol 8 (8) ◽  
pp. 314-320
Author(s):  
C. Lauhoff ◽  
N. Sommer ◽  
M. Vollmer ◽  
G. Mienert ◽  
P. Krooß ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy

scholarly journals Effect of Microstructure on High Temperature High-cycle Fatigue Properties in a Ni-base Superalloy

1983 ◽  
Vol 69 (1) ◽  
pp. 107-116
Author(s):  
Masaru YAMAMOTO ◽  
Yuhji OOTSUKA ◽  
Ohmi MIYAGAWA ◽  
Dai FUJISHIRO
Keyword(s):  
High Temperature ◽  
High Cycle Fatigue ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Base Superalloy ◽  
Effect Of Microstructure

scholarly journals A novel method to prevent cracking in directed energy deposition of Inconel 738 by in-situ doping Inconel 718

2021 ◽  
Vol 197 ◽  
pp. 109214
Author(s):  
Xiaoqiang Zhang ◽  
Ze Chai ◽  
Huabin Chen ◽  
Jijin Xu ◽  
Luming Xu ◽  
...  
Keyword(s):  
Inconel 718 ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Novel Method ◽  
Directed Energy

scholarly journals Rapid determination of the high cycle fatigue properties of high temperature aeronautical alloys by self-heating measurements

2018 ◽  
Vol 165 ◽  
pp. 22022
Author(s):  
Vincent Roué ◽  
Cédric Doudard ◽  
Sylvain Calloch ◽  
Frédéric Montel ◽  
Quentin Pujol D’Andrebo ◽  
...  
Keyword(s):  
High Temperature ◽  
Room Temperature ◽  
High Cycle Fatigue ◽  
Rapid Determination ◽  
The Self ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Heating Method ◽  
Self Heating

The determination of high cycle fatigue (HCF) properties of a material with standard method requires a lot of specimens, and could be really time consuming. The self-heating method has been developed in order to predict S–N–P curves (i.e., amplitude stress – number of cycles to failure – probability of failure) with only a few specimens. So the time-saving advantage of this method has been demonstrated on several materials, at room temperature. In order to reduce the cost and time of fatigue characterization at high temperature, the self-heating method is adapted to characterize HCF properties of a titanium alloy, the Ti-6Al-4V (TA6V), at different temperatures. So the self-heating procedure is adjusted to conduct tests with a furnace. Two dissipative phenomena can be observed on self-heating curves. Because of this, a two-scale probabilistic model with two dissipative mechanisms is used to describe them. The first one is observed for low amplitudes of cyclic loading, under the fatigue limit, and the second one for higher amplitudes where the mechanisms of fatigue damage are activated and are dissipating more energy. This model was developed on steel at room temperature. Even so, it is used to describe the self-heating curves of the TA6V at several temperatures.

Sign in / Sign up

Export Citation Format

Share Document