How martensite transformations affect cyclic strength and energy dissipation for Cr-Ni-Mn-base austenitic steels during deformation

1981 ◽  
Vol 13 (2) ◽  
pp. 249-252
Author(s):  
L. I. Kochkin ◽  
A. A. Rudakov
Keyword(s):  
Energy Dissipation ◽  
Cyclic Strength ◽  
Austenitic Steels ◽  
Martensite Transformations

In-Situ Neutron Diffraction Study of the Deformation Behaviour of Two High-Manganese Austenitic Steels

2011 ◽  
Vol 681 ◽  
pp. 474-479 ◽  
Author(s):  
Ru Lin Peng ◽  
Xiao Peng Liu ◽  
Yan Dong Wang ◽  
Shu Yan Zhang ◽  
Yong Feng Shen ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Deformation Behaviour ◽  
Tensile Loading ◽  
Neutron Diffraction Study ◽  
Austenitic Steels ◽  
Ε Martensite ◽  
Martensite Transformations ◽  
Iron Manganese ◽  
Mn Steel

In-situ neutron diffraction experiments under tensile loading were carried out to study the micromechanical behaviour of two iron-manganese based steels, a TWIP (twinning induced plasticity) steel with 30 wt% Mn and a TRIP steel (transformation induced plasticity) with 20 wt% Mn. The former was loaded to 31.3% strain and the latter to 20% strain. The 30 wt.% Mn steel had a fully austenitic microstructure which remained stable over the loading range studied, while stress induced austenite to α´- and ε-martensite transformations occur in the 20 wt.% Mn steel which initially contained an α´-martensite in addition to the austenite. The evolution of lattice strains under tensile loading differs between the two steels, reflected their different plastic deformation mechanisms. A stronger grain-orientation dependent behaviour is observed during deformation for the 20 wt.% Mn in contrast to the 30wt.% Mn steel.

Influence of Morphology of Deformation Induced α´-Martensite on Stress-Strain Response in a Two Phase Austenitic-Martensitic-Steel

2013 ◽  
Vol 592-593 ◽  
pp. 582-585 ◽  
Author(s):  
Robert Skorupski ◽  
Marek Smaga ◽  
Dietmar Eifler ◽  
Regina Schmitt ◽  
Ralf Müller
Keyword(s):  
Deformation Behavior ◽  
Research Work ◽  
Phase Field Model ◽  
Austenitic Steels ◽  
Strain Response ◽  
Martensitic Steels ◽  
Stress Strain ◽  
Two Phase ◽  
Martensitic Microstructure ◽  
Martensite Transformations

In this research work specimens of the metastable austenitic steels AISI 304 and AISI 347 with one phase (fully austenitic) and two phase (austenitic-α ́-martensitic) microstructure were monotonically loaded at ambient temperature. Using stress-strain and temperature measurements the deformation behavior was characterized in detail. To study the influence of morphology of deformation induced α ́-martensite on the stress-strain response a phase field model for α ́-martensite transformations was developed. With this approach it was possible to model the two phase austenite-α ́-martensite microstructure and investigate the deformation behavior on the micro level. With optical microscopy, magnetic and x-ray measurements the microstructure characterization of fully austenitic and austenitic-α ́-martensitic steels was realized.

Energy Dissipation Processes of Singlet Excited 1-Hydroxyfluorenone and its Hydrogen-Bonded Complex with N-Methylimidazole

2004 ◽  
Author(s):  
Krisztina Sebők-Nagy ◽  
László Biczók ◽  
Akimitsu Morimoto ◽  
Tetsuya Shimada ◽  
Haruo Inoue
Keyword(s):  
Energy Dissipation ◽  
Dissipation Processes ◽  
Hydrogen Bonded
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