scholarly journals On the Fatigue Strength of Longitudinal Butt Welds of High Tensile Strength Structural Steel Plates

1958 ◽  
Vol 7 (53) ◽  
pp. 82-86
Author(s):  
Ichiro KONISHI ◽  
Otomaro TAKAGI ◽  
Kijuro SHIMADA
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Structural Steel ◽  
Steel Plates ◽  
High Tensile Strength ◽  
Butt Welds

Microstructures and Mechanical Properties of Welded Joints of Several High Tensile Strength Steel

2018 ◽  
Vol 941 ◽  
pp. 224-229
Author(s):  
Takahiro Izumi ◽  
Tatsuya Kobayashi ◽  
Ikuo Shohji ◽  
Hiroaki Miyanaga
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Weld Metal ◽  
Welded Joints ◽  
Welded Joint ◽  
Steel Plates ◽  
Fatigue Properties ◽  
High Tensile Strength ◽  
The Matrix ◽  
Microstructures And Mechanical Properties

Microstructures and mechanical properties of lap fillet welded joints of several high and ultra-high tensile strength steel by arc welding were investigated. Steel plates having tensile strength of 400 (SPH400W), 590 (SPC590Y, SPC590R), 980 (SPC980Y) and 1500 MPa (SAC1500HP) class with 2 mm thickness were prepared. Four types of joints were formed by MAG welding; SPH400W/SPH400W, SPC590Y/SPC590Y, SPC980Y/SPC980Y and SAC1500HP/SPC590R. In joints with SPC590Y, SPC980Y and SAC1500HP steel which matrixes are martensitic microstructures, the HAZ softens due to transformation of martensite into ferrite with precipitating cementite. By using high and ultra-high tensile strength steel, the weld metal is strengthened due to dilution of the matrix into the weld metal and thus tensile shear strength of the welded joint increases. In the fatigue test, similar S-N diagrams were obtained in the all welded joints investigated. It seems that the effect of stress concentration due to the shape of the welded joint on fatigue properties is larger than that of the strength of the matrix.

G0301504 Fatigue Strength of Press Forming Die Steels for High Tensile Strength Steel

2015 ◽  
Vol 2015 (0) ◽  
pp. _G0301504--_G0301504-
Author(s):  
Hironori FURUKAWA ◽  
Noriyo HORIKAWA ◽  
Toshiro MIYAJIMA ◽  
Takaharu KASHI ◽  
Akira UENO ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
High Tensile Strength ◽  
Die Steels ◽  
Press Forming

High power disk laser-metal active gas arc hybrid welding of thick high tensile strength steel plates

2016 ◽  
Vol 28 (1) ◽  
pp. 012004 ◽  
Author(s):  
Qinglong Pan ◽  
Masami Mizutani ◽  
Yousuke Kawahito ◽  
Seiji Katayama
Keyword(s):  
Tensile Strength ◽  
High Power ◽  
Steel Plates ◽  
Hybrid Welding ◽  
High Tensile Strength ◽  
Disk Laser

scholarly journals Improvement on Fatigue Strength of Welded Joints in High Tensile Strength Steels by Means of UIT

2011 ◽  
Vol 77 (777) ◽  
pp. 690-693 ◽  
Author(s):  
Atsushi YAMAGUCHI ◽  
Yu TOGASAKI ◽  
Takashi HONDA ◽  
Tetsuya SASAKI ◽  
Hirokazu TSUJI
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Welded Joints ◽  
High Tensile Strength
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