scholarly journals Ultra-high cycle fatigue behavior of a novel 1.9 GPa grade super-high-strength maraging stainless steel

2019 ◽  
Vol 755 ◽  
pp. 50-56 ◽  
Author(s):  
Chao Liu ◽  
Ming-Chun Zhao ◽  
Ying-Chao Zhao ◽  
Le Zhang ◽  
Deng-Feng Yin ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
High Strength ◽  
Cycle Fatigue ◽  
Maraging Stainless Steel ◽  
Ultra High Cycle Fatigue

On the critical inclusion size of high strength steels under ultra-high cycle fatigue

2006 ◽  
Vol 427 (1-2) ◽  
pp. 167-174 ◽  
Author(s):  
Z.G. Yang ◽  
J.M. Zhang ◽  
S.X. Li ◽  
G.Y. Li ◽  
Q.Y. Wang ◽  
...  
Keyword(s):  
High Cycle Fatigue ◽  
High Strength Steels ◽  
High Strength ◽  
Inclusion Size ◽  
Cycle Fatigue ◽  
Ultra High Cycle Fatigue

Effect of Plasma Nitriding on Ultra-High Cycle Fatigue Behaviors of Ti-6Al-4V

2011 ◽  
Vol 295-297 ◽  
pp. 2386-2389 ◽  
Author(s):  
Ren Hui Tian ◽  
Qiao Lin Ouyang ◽  
Qing Yuan Wang
Keyword(s):  
High Cycle Fatigue ◽  
Plasma Nitriding ◽  
Fatigue Behavior ◽  
Fatigue Crack Initiation ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Ultrasonic Fatigue ◽  
Ultra High Cycle Fatigue ◽  
Stress Ratios

In order to investigate the effect of plasma nitriding treatment on fatigue behavior of titanium alloys, very high cycle fatigue tests were carried out for Ti-6Al-4V alloy using an ultrasonic fatigue machine under load control conditions for stress ratios of R=-1 at frequency of ƒ=20KHz. Experiment results showed that plasma nitriding treatment played the principal role in the internal fatigue crack initiation. More importantly, plasma nitriding treatment had a detrimental effect on fatigue properties of the investigated Ti-6Al-4V alloy, and the fatigue strength of material after plasma nitriding treatment appeared to be significantly reduced about 17% over the untreated material.

High Cycle Fatigue Behavior of Recycled Additive Manufactured Electron Beam Melted Titanium Ti6Al4V

2020 ◽  
Author(s):  
Melody Mojib ◽  
Rishi Pahuja ◽  
M. Ramulu ◽  
Dwayne Arola
Keyword(s):  
Electron Beam ◽  
Fatigue Life ◽  
Rough Surface ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
High Strength ◽  
Fatigue Tests ◽  
Cycle Fatigue ◽  
Initiation And Propagation ◽  
Powder Recycling

Abstract Metal Additive Manufacturing (AM) has become a popular method for producing complex and unique geometries, especially gaining traction in the aerospace and medical industries. With the increase in adoption of AM and the high cost of powder, it is critical to understand the effects of powder recycling on part performance to move towards material qualification and certification of affordable printed components. Due to the limitations of the Electron Beam Melting (EBM) process, current as-printed components are susceptible to failure at limits far below wrought metals and further understanding of the material properties and fatigue life is required. In this study, a high strength Titanium alloy, Ti-6Al-4V, is recycled over time and used to print fatigue specimens using the EBM process. Uniaxial High Cycle Fatigue tests have been performed on as-printed and polished cylindrical specimens and the locations of crack initiation and propagation have been determined through the use of a scanning electron microscope. This investigation has shown that the rough surface exterior is far more detrimental to performance life than the powder degradation occurring due to powder reuse. In addition, the effects of the rough surface exterior as a stress concentration is evaluated using the Arola-Ramulu. The following is a preliminary study of the effects powder recycling and surface treatments on EBM Ti-6Al4V fatigue life.

High cycle fatigue behavior of hard turned 300 M ultra-high strength steel

2020 ◽  
Vol 131 ◽  
pp. 105380 ◽  
Author(s):  
J. Ajaja ◽  
W. Jomaa ◽  
P. Bocher ◽  
R.R. Chromik ◽  
M. Brochu
Keyword(s):  
High Strength Steel ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
High Strength ◽  
Cycle Fatigue ◽  
Ultra High Strength Steel

Fatigue behavior of AW7075 aluminum alloy in ultra-high cycle fatigue region

2020 ◽  
Vol 774 ◽  
pp. 138922 ◽  
Author(s):  
S. Fintová ◽  
I. Kuběna ◽  
L. Trško ◽  
V. Horník ◽  
L. Kunz
Keyword(s):  
Aluminum Alloy ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue ◽  
Ultra High Cycle Fatigue
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