scholarly journals Study on the High-Temperature Deformation and Dynamic Recrystallization Behavior near the Interface of Stainless Steel Cladding

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 81
Author(s):  
Meirong Shuai ◽  
Binbin Chang ◽  
Min Zhang ◽  
Zhibing Chu ◽  
Haibin Li ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Building Materials ◽  
Electron Backscatter Diffraction ◽  
Positive Impact ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Different Temperatures ◽  
Dynamic Recrystallization Behavior ◽  
Backscatter Diffraction

To ensure the long service life of concrete buildings in the marine environment, it is urgent to develop building materials with good corrosion resistance and weatherability. Stainless steel cladding is suitable for a highly corrosive environment and provides cost advantages. This paper investigated the deformation coordination and the microstructure evolution near the cladding interface of stainless steel/carbon steel. The stress-strain curves at different temperatures and strain rates were analyzed on the basis of high-temperature compression experiments. In addition, the sin-hyperbolic constitutive model was constructed, and the optimized parameters were obtained using electron backscatter diffraction characterization technology. The results show that at the deformation temperature of 1100 °C and the strain rate of 1 s−1, the deformation coordination increases significantly near the interface, accompanied by a large number of recrystallized grains, which has a positive impact on the comprehensive performance of the materials.

scholarly journals Microstructural Characterization of Friction-Stir Processed Ti-6Al-4V

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 976 ◽  
Author(s):  
Sergey Mironov ◽  
Yutaka S. Sato ◽  
Hiroyuki Kokawa ◽  
Satoshi Hirano ◽  
Adam L. Pilchak ◽  
...  
Keyword(s):  
Electron Backscatter Diffraction ◽  
Microstructural Characterization ◽  
Mechanical Twinning ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Misorientation Distribution ◽  
Friction Stir ◽  
Α Phase ◽  
Ebsd Technique ◽  
Backscatter Diffraction

The present work was undertaken to shed additional light on the globular-α microstructure produced during FSP of Ti-6Al-4V. To this end, the electron backscatter diffraction (EBSD) technique was employed to characterize the crystallographic aspects of such microstructure. In contrast to the previous reports in the literature, neither the texture nor the misorientation distribution in the α phase were random. Although the texture was weak, it showed a clear prevalence of the P1 and C-fiber simple-shear orientations, thus providing evidence for an increased activity of the prism-<a> and pyramidal <c+a> slip systems. In addition, the misorientation distribution exhibited a crystallographic preference of 60° and 90° boundaries. This observation was attributed to a partial α→β→α phase transformation during/following high-temperature deformation and the possible activation of mechanical twinning.

Effect of Residual Stress on High Temperature Deformation in a Weld Stainless Steel

2006 ◽  
Vol 524-525 ◽  
pp. 311-316 ◽  
Author(s):  
Robert C. Wimpory ◽  
Farid R. Biglari ◽  
Rainer Schneider ◽  
Kamran M. Nikbin ◽  
N.P. O'Dowd
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Stress Relaxation ◽  
Residual Stresses ◽  
Imperial College ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Collaborative Effort ◽  
Specific Objective ◽  
Before And After

This paper considers the measurement of residual stresses induced by mechanical loading in a weld Type 347 stainless steel. The work is based in part on an ongoing Round Robin collaborative effort by the Versailles Agreement on Materials and Standards, Technical Working Area 31, (VAMAS TWA 31) working on ‘Crack Growth of Components Containing Residual Stresses’. The specific objective of the work at Imperial College London and HMI, Berlin is to examine how residual stresses and prior straining and subsequent relaxation at high temperature contribute to creep crack initiation and growth for steels relevant to power plant applications. Tensile residual stresses have been introduced in the weld by pre-compression and neutron diffraction measurements have been carried out before and after stress relaxation at 650 oC. Significant relaxation of the residual stresses has been observed, in agreement with earlier work on a stainless steel. Preliminary results suggest that the strains local to the crack drop by over 60% after 1000 h relaxation at 650 oC for the weld steel. The results have been compared with finite element studies of elastic-plastic pre-compression and stress relaxation due to creep.

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