scholarly journals Fatigue damage formation and microstructure of ultrafine grained copper under two-step loading

2013 ◽  
Author(s):  
M. Goto ◽  
S. Z. Han ◽  
K. Euh ◽  
N. Teshima ◽  
T. Yakushiji ◽  
...  
Keyword(s):  
Fatigue Damage ◽  
Ultrafine Grained ◽  
Step Loading

scholarly journals S-N Property and Fatigue Damage of Ultrafine Grained Cu Smooth Specimens

2014 ◽  
Vol 3 ◽  
pp. 524-530 ◽  
Author(s):  
M. Goto ◽  
S.Z. Han ◽  
M. Baba ◽  
J.H. Ahn ◽  
S. Kim ◽  
...  
Keyword(s):  
Fatigue Damage ◽  
Ultrafine Grained

102 Fatigue Damage of a Squeeze Cast Al Alloy under Two-Step Loading

2000 ◽  
Vol 005.2 (0) ◽  
pp. 3-4
Author(s):  
Masahiro GOTO ◽  
Takaei YAMAMOTO ◽  
Hironobu NISITANI ◽  
Norio KAWAGOISHI ◽  
Naomichi YAMAMOTO
Keyword(s):  
Fatigue Damage ◽  
Al Alloy ◽  
Squeeze Cast ◽  
Step Loading

scholarly journals 411 Effect of low-temperature annealing on the fatigue damage of ultrafine-grained copper

2014 ◽  
Vol 2014.67 (0) ◽  
pp. _411-1_-_411-2_
Author(s):  
Norihiro TESHIMA ◽  
Masahiro GOTO ◽  
Seungzeon HAN ◽  
Kotaro YAMAUCHI ◽  
Terutoshi YAKUSHIJI
Keyword(s):  
Low Temperature ◽  
Fatigue Damage ◽  
Low Temperature Annealing ◽  
Ultrafine Grained

105 Fatigue Damage of Ni-base Superalloy Inconel 718 under the Two-Step Loading

2000 ◽  
Vol 2000 (0) ◽  
pp. 9-10
Author(s):  
Takaei YAMAMOTO ◽  
Masahiro GOTO ◽  
Norio KAWAGOISHI ◽  
Hironobu NISHITANI
Keyword(s):  
Fatigue Damage ◽  
Inconel 718 ◽  
Step Loading ◽  
Base Superalloy

High-Cycle Fatigue Damage of Oxygen-Free and Deoxidized-Phosphorous Copper Processed by Equal Channel Angular Pressing

2014 ◽  
Vol 627 ◽  
pp. 201-204
Author(s):  
M. Goto ◽  
N. Teshima ◽  
Seung Zeon Han ◽  
J.H. Ahn ◽  
T. Yakushiji
Keyword(s):  
Equal Channel Angular Pressing ◽  
Fatigue Damage ◽  
Surface Hardness ◽  
Surface Damage ◽  
Trace Impurities ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Close Relationship ◽  
Formation Behavior ◽  
Equiaxed Grains

Two Cu samples: oxygen-free copper (99.99 wt% Cu) and deoxidized low-phosphorous copper (99.9 wt% Cu) were processed by equal channel angular pressing (ECAP). After the ECAP processing using 4 passes, equiaxed grains (~300 nm grain size) and elongated grains were formed for both samples. Fatigue strength of ultrafine grained Cu was enhanced by the addition of trace impurities. The formation behavior of surface damage and the change in surface hardness during stressing were monitored. A close relationship was observed between the change in hardness and the formation behavior of damage. The effect of trace impurities on the fatigue damage was discussed from the viewpoints of the grain coarsening and the crack initiation/growth behaviors.

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