Effect of Surface Nanocrystallization on Fatigue Properties of Ti-6Al-4V Alloys with bimodal and lamellar structure

2021 ◽  
pp. 141142
Author(s):  
Conghui Zhang ◽  
Kun Hu ◽  
Min Zheng ◽  
Wenguang Zhu ◽  
Guodong Song
Keyword(s):  
Lamellar Structure ◽  
Fatigue Properties ◽  
Surface Nanocrystallization ◽  
Effect Of Surface

EFFECT OF SURFACE NANOCRYSTALLIZATION ONMICROSTRUCTURE AND THERMAL STABILITYOF REDUCED ACTIVATION STEEL

2013 ◽  
Vol 49 (6) ◽  
pp. 707 ◽  
Author(s):  
Wenbo LIU ◽  
Chi ZHANG ◽  
Zhigang YANG ◽  
Zhixin XIA ◽  
Guhui GAO ◽  
...  
Keyword(s):  
Surface Nanocrystallization ◽  
Reduced Activation Steel ◽  
Effect Of Surface

Fatigue of Unmachined Aluminium Alloy Extrusions

1962 ◽  
Vol 13 (3) ◽  
pp. 271-274 ◽  
Author(s):  
K. W. Gunn ◽  
A. R. Woodward
Keyword(s):  
Laboratory Test ◽  
Aluminium Alloy ◽  
Shot Peening ◽  
Copper Alloys ◽  
High Strength ◽  
Fatigue Properties ◽  
Test Pieces ◽  
Compressive Stresses ◽  
Aluminium Copper ◽  
Effect Of Surface

SummaryThe fatigue properties of unmachined extrusions of high-strength aluminium-copper alloys are known to be lower than those of conventional fully-machined test pieces. Work described in this note has shown that the removal of a layer of metal 0·025 in. thick from the surface of B.S. L65-type extrusions results in an increase in fatigue properties to values approaching those obtained from the conventional laboratory test pieces. Because the removal of material from the surface is not always a practical proposition, other methods of improving strength have been examined and the effect of surface compressive stresses has been shown to be beneficial. Sufficient compressive stress can be induced by surface-rolling to increase the fatigue properties to those of conventional specimens, but this method can only be easily applied to round sections and it is suggested that shot-peening or vapour-blasting could be used for more complicated sections.

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