Characteristics of Hydrogen-Assisted Cracking Measured by the Holding-Load and Fractographic Method

2009 ◽  
pp. 69-69-20 ◽  
Author(s):  
N Ohtsuka ◽  
H Yamamoto
Keyword(s):  
Hydrogen Assisted Cracking

Development of an equipment to evaluate the susceptibility to hydrogen assisted cracking

2017 ◽  
Author(s):  
Danilo Souza ◽  
José Eduardo Silveira Leal ◽  
Sinésio Franco ◽  
Guilherme Martiniano
Keyword(s):  
Hydrogen Assisted Cracking

Studies on Hydrogen Assisted Cracking Susceptibility of 2.25Cr-1Mo Steel Weldments

1997 ◽  
Vol 30 (3) ◽  
pp. 7 ◽  
Author(s):  
S. K. Albert ◽  
T. P. S. Gill ◽  
V. Ramasubbu ◽  
F. C. Parida ◽  
S. D. Kulkarni
Keyword(s):  
Hydrogen Assisted Cracking

Micromechanisms of Hydrogen-Assisted Cracking in Super Duplex Stainless Steel Investigated by Scanning Probe Microscopy

2014 ◽  
Author(s):  
Bai An ◽  
Takashi Iijima ◽  
Chris San Marchi ◽  
Brian Somerday
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Scanning Tunneling ◽  
Super Duplex Stainless Steel ◽  
Tunneling Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hydrogen Assisted Cracking ◽  
Cracking Mechanisms ◽  
Localized Plastic Deformation

Understanding the micromechanisms of hydrogen-assisted fracture in multiphase metals is of great scientific and engineering importance. By using a combination of scanning electron microscopy (SEM), scanning tunneling microscopy (STM), atomic force microscopy (AFM) and magnetic force microscopy (MFM), the micromorphology of fracture surface and microcrack formation in hydrogen-precharged super duplex stainless steel 2507 are characterized from microscale to nanoscale. The results reveal that the fracture surfaces consist of quasi-brittle facets with riverlike patterns at the microscale, which exhibit rough irregular patterns or remarkable quasi-periodic corrugation patterns at the nanoscale that can be correlated with highly localized plastic deformation. The microcracks preferentially initiate and propagate in ferrite phase and are stopped or deflected by the boundaries of the austenite phase. The hydrogen-assisted cracking mechanisms in super duplex stainless steel are discussed according to the experimental results and hydrogen-enhanced localized plasticity theory.

Hydrogen assisted cracking of AISI 4137M steel in O&G environments

2015 ◽  
Vol 40 (47) ◽  
pp. 17051-17064 ◽  
Author(s):  
Ramgopal Thodla ◽  
Marcelo T. Piza Paes ◽  
Brandon Gerst
Keyword(s):  
Hydrogen Assisted Cracking

Hydrogen Transport and Hydrogen-Assisted Cracking in SUS304 Stainless Steel During Deformation at Low Temperatures

2015 ◽  
Author(s):  
Lin Zhang ◽  
Bai An ◽  
Takashi Iijima ◽  
Chris San Marchi ◽  
Brian Somerday
Keyword(s):  
Stainless Steel ◽  
Hydrogen Embrittlement ◽  
Room Temperature ◽  
Hydrogen Release ◽  
Hydrogen Transport ◽  
Force Microscopy ◽  
Atomic Force ◽  
Strain Induced Martensite ◽  
Hydrogen Assisted Cracking ◽  
Slip Planes

The behaviors of hydrogen transport and hydrogen-assisted cracking in hydrogen-precharged SUS304 austenitic stainless steel sheets in a temperature range from 177 to 298 K are investigated by a combined tensile and hydrogen release experiment as well as magnetic force microscopy (MFM) based on atomic force microscopy (AFM). It is observed that the hydrogen embrittlement increases with decreasing temperature, reaches a maximum at around 218 K, and then decreases with further temperature decrease. The hydrogen release rate increases with increasing strain until fracture at room temperature but remains near zero level at and below 218 K except for some small distinct release peaks. The MFM observations reveal that fracture occurs at phase boundaries along slip planes at room temperature and twin boundaries at 218 K. The role of strain-induced martensite in the hydrogen transport and hydrogen embrittlement is discussed.

scholarly journals Study on hydrogen assisted cracking susceptibility of HSLA steel by implant test

2016 ◽  
Vol 12 (6) ◽  
pp. 490-495 ◽  
Author(s):  
Gopa Chakraborty ◽  
R. Rejeesh ◽  
S.K. Albert
Keyword(s):  
Hsla Steel ◽  
Hydrogen Assisted Cracking ◽  
Implant Test

scholarly journals A phase field formulation for hydrogen assisted cracking

2018 ◽  
Vol 342 ◽  
pp. 742-761 ◽  
Author(s):  
Emilio Martínez-Pañeda ◽  
Alireza Golahmar ◽  
Christian F. Niordson
Keyword(s):  
Phase Field ◽  
Hydrogen Assisted Cracking

Effective hydrogen diffusivities of AISI 304 stainless steel with Ni or Au coating

2020 ◽  
Vol 62 (6) ◽  
pp. 593-596
Author(s):  
Krittayot Wannapoklang ◽  
Sirichai Leelachao ◽  
Anchaleeporn W. Lothongkum ◽  
Gobboon Lothongkum
Keyword(s):  
Stainless Steel ◽  
Hydrogen Diffusion ◽  
304 Stainless Steel ◽  
Phase Identification ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
304 Austenitic Stainless Steel ◽  
Hydrogen Assisted Cracking ◽  
Stainless Steel Coupon ◽  
Effective Hydrogen

AbstractMetallic coatings which provide a hydrogen diffusion barrier are thought to reduce hydrogen assisted cracking on stainless steel. The influence of a metallic layer on the hydrogen migration of AISI 304 stainless steel was investigated using a commercial electroplating layer of Ni and Au on a thin stainless steel coupon. Phase identification was performed using an X-ray diffractometer to determine the average thicknesses, measured from back-scattered scanning electron images. Regarding the ASTM G148-97 practice, the effective hydrogen diffusivities of AISI 304 austenitic stainless steel, nickel and gold were measured as 7.07 × 10-13, 2.72 × 10-14 and 9.64 × 10-16 m2 × s-1, respectively. In this work, a gold layer was found to be most effective for the prevention of hydrogen diffusion when compared with untreated and Ni-plated 304 stainless steel.

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