scholarly journals Creep-Fatigue Fracture Mechanism of Modified 9Cr-1Mo Steel and its Evaluation by the Damage Model Based on the Overstress Concept.

1995 ◽  
Vol 61 (590) ◽  
pp. 2160-2167
Author(s):  
Masatsugu Yaguchi ◽  
Akiyoshi Ishikawa ◽  
Yasuhide Asada
Keyword(s):  
Fatigue Fracture ◽  
Fracture Mechanism ◽  
Damage Model ◽  
Model Based ◽  
Creep Fatigue ◽  
Fatigue Fracture Mechanism

scholarly journals Fatigue Fracture Mechanism of a Nickel-Based Single Crystal Superalloy with Partially Recrystallized Grains at 550 °C by In Situ SEM Studies

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1007
Author(s):  
Hao Yang ◽  
Jishen Jiang ◽  
Zhuozheng Wang ◽  
Xianfeng Ma ◽  
Jiajun Tu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Fatigue Fracture ◽  
Fracture Mechanism ◽  
Fatigue Cracks ◽  
Single Crystal Substrate ◽  
In Situ Observation ◽  
Slip Systems ◽  
Intergranular Cracking ◽  
Fatigue Fracture Mechanism

The fatigue fracture mechanism of a nickel-based single crystal (NBSC) superalloy with recrystallized grains was studied at 550 °C by in situ observation with a scanning electron microscope (SEM) for the first time. Multiple crack initiations associated with recrystallized grain boundaries and carbides were observed. By analysis of the slip traces and crack propagation planes, the operated slip systems were identified to be octahedral for both single crystal substrate and recrystallized grains. Distinct crystallographic fractures dominated, accompanied by recrystallized grain boundary associated crack initiations. This is different from the widely reported solely intergranular cracking at high temperature. Fatigue crack growth rate curves showed evident fluctuation, due to the interaction of fatigue cracks with local microstructures and the crack coalescence mechanism. Both the recrystallized grains and the competition between different slip systems were responsible for the deceleration and acceleration of fatigue microstructurally small crack behavior.

Fatigue fracture mechanism of the bismuth free machining steel with Super hard and self-lubrication coating

2002 ◽  
Vol 2002 (0) ◽  
pp. 249-250
Author(s):  
Hideto SUZUKI ◽  
Takeshi KASUYA ◽  
Motoaki WATANABE ◽  
Satoshi YASU ◽  
Shinobu NEMOTO
Keyword(s):  
Fatigue Fracture ◽  
Fracture Mechanism ◽  
Fatigue Fracture Mechanism

Fatigue fracture mechanism of class A-SMC by acoustic emission method (In Japanese)

1992 ◽  
Vol 25 (6) ◽  
pp. 305
Author(s):  
M. Suzuki ◽  
H. Nakanishi ◽  
M. Iwamoto ◽  
Jiao Guiquiong ◽  
K. Koike ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fatigue Fracture ◽  
Fracture Mechanism ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Class A ◽  
Fatigue Fracture Mechanism

scholarly journals Fatigue Fracture Mechanism of an Ion-nitrided Low Carbon Steel S 15 CK.

2001 ◽  
Vol 67 (657) ◽  
pp. 899-905
Author(s):  
Takashi MAKISHI ◽  
Chobin MAKABE ◽  
Hideo KANESHIRO ◽  
Shinji TAMAKI
Keyword(s):  
Carbon Steel ◽  
Fatigue Fracture ◽  
Fracture Mechanism ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Fatigue Fracture Mechanism
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