Effect of Hydrogen on Fracture of Austenitic Fe-Mn-Al Steel.
スポンサーリンク
概要
- 論文の詳細を見る
In this investigation a stable high manganese austenitic steel, 0.45C-17Mn-2.8Al, has been studied for hydrogen embrittlement using cathodically precharged specimens. Tensile testing of axisymmetric and plane strain specimens precharged with hydrogen show an appreciable loss of 8-10% reduction in area (RA) whereas the loss in % elongation is lesser. The true fracture strain decreased from 0.88 to 0.73 for axisymmetric and from 0.79 to 0.60 for plane strain specimens. Hydrogen precharging is observed to result in decrease of CTOD at crack initiation by about 0.07 mm and a decrease in crack tip fracture strain for crack initiation from 0.53 to 0.34. The greater effect of hydrogen precharging thus observed is attributed to existence of higher stress triaxiality in CTOD and plane strain tensile testing in comparison to axisymmetric one. On SEM examination of fracture surfaces the uncharged tensile specimens showed only dimpled fracture, the precharged specimens showed transition from dimpled to quasicleavage and intergranular fracture near the surface. Regions close to the pre-fatigue tip in CTOD specimens depict intergranular fracture. The fractographic changes are attributed to the combined role of stress intensity and hydrogen concentration variation arising out of hydrogen transport inside the specimen.
- The Iron and Steel Institute of Japanの論文
著者
-
Mittal S.
Department Of Aerospace Engineering Indian Institute Of Technology
-
Prasad R.
Department Of Endocrinology And Metabolism Defence Institute Of Physiology And Allied Sciences
-
MITTAL S.
Department of Metallurgical Engineering, Indian Institute of Technology
-
Deshmukh M.
Naval Chemical and Metal Laboratory
関連論文
- Complete and Incomplete Fusion : Measurement and Analysis of Excitation Functions in ^C+^Te System at Energies near and above the Coulomb Barrie
- Complete and Incomplete Fusion : Measurement and Analysis of Excitation Functions in ^C+^Te System at Energies near and above the Coulomb Barrier
- P-IS-76 Sublingual misoprostol versus methylergometrine for active management of the third stage of labor(Perinatology 2,Group 107,International Session)
- Plasma Insulin and Growth Hormone during Antarctic Residence
- Granulocytic Sarcoma of Uterine Cervix as Presentation of Acute Myeloid Leukemia : A Case Report and Review of Literature
- Evidence for Dissociated Dislocations in Cadmium Iodide
- Role of shear layer instability in the transition of boundary layer on a bluff body
- 3D Flows Past Circular Cylinder of Low Aspect Ratio
- Decay of $^{177}T_{a}$ Composite Nucleus: Comparison of Excitation Functions for the Reaction Residues Occurring in $^{12}C+{}^{165}H_{o}$ and $^{14}N+{}^{163}D_{y}$ Reactions
- Effect of Hydrogen on the Impact Behaviour of an Austenitic Fe-Mn-Al Alloy
- Deformation and Fracture Behavior of Cast and Extruded 7075Al-SiC_p Composites at Room and Elevated Temperatures
- Shear Layer Instability at Low Reynolds Numbers
- Excitation of Shear Layer Instability at Low Reynolds Number via an Unsteady Inflow
- Effect of Hydrogen on Fracture of Austenitic Fe-Mn-Al Steel.