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

scholarly journals Evaluation of tensile strength and fatigue strength of commercial pure aluminum/tough pitch copper friction-welded joints by deformation heat input

2007 ◽  
Vol 57 (8) ◽  
pp. 357-361 ◽  
Author(s):  
Hiizu OCHI ◽  
Yoshiaki YAMAMOTO ◽  
Takashi YAMAZAKI ◽  
Takeshi SAWAI ◽  
Gosaku KAWAI ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Fatigue Strength ◽  
Welded Joints ◽  
Heat Input ◽  
Pure Aluminum ◽  
Commercial Pure Aluminum

Influence of Stress Concentration on Fatigue Property of Welded Joints of 5083 Aluminum Alloy

2013 ◽  
Vol 456 ◽  
pp. 451-455
Author(s):  
Jun Yang ◽  
Bo Li ◽  
Qiang Jia ◽  
Yuan Xing Li ◽  
Ming Yue Zhang ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Stress Concentration ◽  
Welded Joints ◽  
Weld Zone ◽  
Fatigue Property ◽  
Concentration Coefficient ◽  
5083 Aluminum Alloy ◽  
Stress Concentration Coefficient

Fatigue test of the welded joint of 5083 aluminum alloy with smooth and height of specimen and the weld zone than the high test measurement and theoretical stress concentration coefficient calculation, the weld reinforcement effect of stress concentration on the fatigue performance of welded joints. The results show that: Smooth tensile strength of specimens for 264MPa, fatigue strength is 95MPa, the tensile strength of the 36%. Higher tensile strength of specimens for 320MPa, fatigue strength is 70MPa, the tensile strength of the 22%. Higher specimen stress concentration coefficient is 1.64, the stress concentration to the weld toe becomes fatigue initiation source, and reduces the fatigue strength and the fatigue life of welded joints.

scholarly journals A Study on Factors Controlling Critical COD Value of Welded Joints of High-Tensile Strength Steels

1987 ◽  
Vol 1987 (162) ◽  
pp. 424-432 ◽  
Author(s):  
Toshiaki Haze ◽  
Shuji Aihara ◽  
Yukito Hagiwara ◽  
Kouichi Uchino ◽  
Yokimi Kawashima ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Welded Joints ◽  
High Tensile Strength

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

Tensile Strength and Fatigue Strength of 6061 Aluminum Alloy Friction Welded Joints

2002 ◽  
Vol 396-402 ◽  
pp. 1685-1690
Author(s):  
Hiizu Ochi ◽  
Takeshi Sawai ◽  
Yoshiaki Yamamoto ◽  
Koichi Ogawa ◽  
Yasuo Suga ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Welded Joints ◽  
6061 Aluminum Alloy
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