Microstructure and residual stress distribution of similar and dissimilar electron beam welds – Maraging steel to medium alloy medium carbon steel

2010 ◽  
Vol 31 (2) ◽  
pp. 749-760 ◽  
Author(s):  
P. Venkata Ramana ◽  
G. Madhusudhan Reddy ◽  
T. Mohandas ◽  
A.V.S.S.K.S. Gupta
Keyword(s):  
Residual Stress ◽  
Electron Beam ◽  
Carbon Steel ◽  
Stress Distribution ◽  
Maraging Steel ◽  
Medium Carbon Steel ◽  
Residual Stress Distribution ◽  
Medium Carbon

Determination of Residual Stress Distribution in Severe Surface Deformed Steel by Shot Peening

2008 ◽  
Vol 571-572 ◽  
pp. 15-20 ◽  
Author(s):  
Yoshiaki Akiniwa ◽  
Hidehiko Kimura
Keyword(s):  
Carbon Steel ◽  
Synchrotron Radiation ◽  
Stress Distribution ◽  
Optimization Technique ◽  
High Energy ◽  
Medium Carbon Steel ◽  
X Rays ◽  
Near Surface ◽  
Medium Carbon ◽  
Order Polynomial

The compressive stress distribution below the specimen surface of a nanocrystalline medium carbon steel was investigated nondestructively by using high-energy X-rays from a synchrotron radiation source, SPring-8 (Super Photon ring-8 GeV) in the Japan Synchrotron Radiation Research Institute. A medium carbon steel plate was shot-peened with fine cast iron particles of the size of 50 μm. By using the monochromatic X-ray beam with three energy levels of 10, 30 and 72 keV, the stress values at the arbitrary depth were measured by the constant penetration depth method. The stress was calculated from the slope of the sin2ψ diagram. Measured stress corresponds to the weighted average associated with the attenuation of the X-rays in the material. The real stress distribution was estimated by using the optimization technique. The stress distribution was assumed by the third order polynomial in the near surface layer and the second order polynomial. The coefficients of the polynomials were determined by the conjugate gradient iteration. The predicted stress distribution agreed well with that measured by the conventional surface removal method.

Characterisation of residual stress distribution in clinching joints of carbon steel by diffraction methods

2003 ◽  
Vol 19 (3) ◽  
pp. 336-342 ◽  
Author(s):  
R. Lin Peng ◽  
N. Rode ◽  
M. Odén ◽  
J. Gibmeier ◽  
B. Scholtes
Keyword(s):  
Residual Stress ◽  
Carbon Steel ◽  
Stress Distribution ◽  
Residual Stress Distribution

scholarly journals Wear Behavior of Medium-Carbon Steel with Different Laser-Textured Densities under Starved Lubrication

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1225
Author(s):  
Fanming Zeng ◽  
Yuting Liu ◽  
Feixian Shao ◽  
Xiujuan Li ◽  
Zhenglei Yu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Stress Distribution ◽  
Wear Behavior ◽  
Coupling Effect ◽  
Equivalent Stress ◽  
Medium Carbon Steel ◽  
Textured Surfaces ◽  
Medium Carbon ◽  
Biological Surface ◽  
Starved Lubrication

Five densities of laser-ablated micro-pits were fabricated onto medium-carbon steel surfaces based on the coupling effect of the biological surface. The effects of the surface textures on the wear behavior were investigated by sliding wear tests under starved lubrication. The results show that compared with the smooth sample, the biomimetic samples could effectively reduce friction and wear, and the tribological performance of the textured surfaces is closely related to the density of the bionic units. The equivalent stress distribution of the specimens was simulated by the finite element method. A uniform stress distribution is beneficial for effectively reducing the generation of wear cracks.

scholarly journals Residual stress distribution of silicon nitride joined to carbon steel.

1990 ◽  
Vol 56 (524) ◽  
pp. 978-983 ◽  
Author(s):  
Masanori KURITA ◽  
Ikuo IHARA ◽  
Makoto SATOH ◽  
Akira SAITOH ◽  
Yasushi FUKUZAWA ◽  
...  
Keyword(s):  
Residual Stress ◽  
Silicon Nitride ◽  
Carbon Steel ◽  
Stress Distribution ◽  
Residual Stress Distribution

Effect of Ultrasonic Impact Treatment on the Residual Stress Distribution of Electron Beam Welded TA15/BTi-6431S Dissimilar Titanium Alloys

2019 ◽  
Vol 944 ◽  
pp. 104-109
Author(s):  
Xiao Yun Song ◽  
Guang Lu Qian ◽  
Ming Yu Zhao ◽  
Yu Wei Diao ◽  
Wen Jun Ye ◽  
...  
Keyword(s):  
Residual Stress ◽  
Electron Beam ◽  
Stress Distribution ◽  
Fusion Zone ◽  
Residual Stress Distribution ◽  
Ultrasonic Impact Treatment ◽  
Welding Joint ◽  
Stress Changes ◽  
Ta15 Alloy ◽  
Martensite Structure

Ti-6.5Al-2Zr-1Mo-1V (TA15) and Ti-6.5Al-3Sn-3Zr-3Mo-3Nb-1W-0.2Si (BTi-6431S) dissimilar titanium alloy plates were welded through electron beam welding (EBW) method and different ultrasonic impact treatment (UIT) technologies were performed on the weldment. The effects of UIT on the microstructure and residual stress distribution and mechanical properties for the welding joint were investigated. A significant microstructural change occurs after welding. The structure of welding joint is composed of fusion zone (FZ), heat-affected zone (HAZ) and base metal. The microstructure of FZ is composed of martensite structure and a clear interface is observed because of the fusion of dissimilar alloys. HAZ near fusion zone is comprised of martensite structure, while the grain size is much smaller than that in FZ. The HAZ microstructure near TA15 alloy is composed of coarse equiaxed α phases and HAZ microstructure near BTi-6431S alloy is lamellar α phases. Through ultrasonic impact treatment for three times, the residual stress near the welding joint shows a uniform distribution and the maximum tensile stress changes to compressive stress. A characteristic asymmetrical microhardness profile is observed in TA15/BTi-6431S dissimilar alloy welded joint. The HAZ in BTi-6431S alloy side possesses higher hardness compared with that in TA15 alloy side. The microhardness and tensile properties change slightly after ultrasonic impact treatment.

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