Short fatigue crack growth behaviour of a low carbon steel under corrosion fatigue conditionsAkid, R. and Miller, K.J. Fatigue Fract. Eng. Mater. Struct. 1991 14, (6), 637–649

1992 ◽  
Vol 14 (1) ◽  
pp. 68-68
Keyword(s):  
Fatigue Crack ◽  
Carbon Steel ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Corrosion Fatigue ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Growth Behaviour ◽  
Crack Growth Behaviour ◽  
Short Fatigue Crack

Microstructural fatigue crack growth in single-packet structures of ultra-low carbon steel lath martensite

2019 ◽  
Vol 173 ◽  
pp. 80-85 ◽  
Author(s):  
Shohei Ueki ◽  
Takuya Matsumura ◽  
Yoji Mine ◽  
Shigekazu Morito ◽  
Kazuki Takashima
Keyword(s):  
Fatigue Crack ◽  
Carbon Steel ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Lath Martensite ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ultra Low Carbon Steel

Temperature Dependence of Fatigue Crack Growth in Low-Carbon Steel Under Gaseous Hydrogen

2019 ◽  
Author(s):  
Osamu Takakuwa ◽  
Yuhei Ogawa ◽  
Saburo Okazaki ◽  
Hisao Matsunaga ◽  
Saburo Matsuoka
Keyword(s):  
Fatigue Crack ◽  
Carbon Steel ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Low Carbon Steel ◽  
Gaseous Hydrogen ◽  
Low Carbon ◽  
Hydrogen Environment ◽  
Crack Wake ◽  
Higher Temperature

Abstract In order to elucidate the temperature dependence of hydrogen-assisted fatigue crack growth (HAFCG), the fatigue crack growth (FCG) test was performed on low-carbon steel JIS-SM490B according to ASTM E647 using compact tension (CT) specimen under 0.7 MPa (≈ 0.1 ksi) hydrogen-gas at room temperature (RT: 298 K (≈ 77 °F)) and 423 K (≈ 302 °F) at stress intensity factor range of ΔK = 30 MPa m1/2 (≈ 27 ksi in1/2). Electron backscatter diffraction (EBSD) observation was performed on the mid-thick section of CT specimen in order to investigate change in plasticity around the crack wake in gaseous hydrogen environment and how it changes due to temperature elevation. The obtained results showed the higher temperature, the lower intense of HAFCG as reported in our previous article. Plasticity around the crack wake became less in gaseous hydrogen environment, especially tested at 298 K. The propensity of the results obtained at higher temperature (423 K) can be separated into two cases: (i) intense plasticity occurs like tested in air, (ii) crack propagates straighter accompanying less plasticity like tested in gaseous hydrogen environment at 298 K. This implies macroscopic FCG rate is determined by combination of microscopic FCG rate in the case (i) and case (ii).

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