scholarly journals Effects of Vacuum Environment on Fatigue Properties of High Strength Steel with a Small Defect

2013 ◽  
Vol 79 (806) ◽  
pp. 1545-1549
Author(s):  
Takeshi OOKA ◽  
Kenji YOSHIMOTO ◽  
Takashi NAKAMURA
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Fatigue Properties ◽  
Small Defect

scholarly journals Effect of HFMI treatment procedure on weld toe geometry and fatigue properties of high strength steel welds

2016 ◽  
Vol 2 ◽  
pp. 3483-3490 ◽  
Author(s):  
Ebrahim Harati ◽  
Lars-Erik Svensson ◽  
Leif Karlsson ◽  
Kjell Hurtig
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Fatigue Properties ◽  
Treatment Procedure ◽  
Weld Toe ◽  
Steel Welds

Study on Micro-Mechanism of Crack Initiation and Propagation Induced by Inclusion in Ultra-High Strength Steel

2007 ◽  
Vol 353-358 ◽  
pp. 1185-1190 ◽  
Author(s):  
Yan Ping Zeng ◽  
Hong Mei Fan ◽  
Xi Shu Wang ◽  
Xi Shan Xie
Keyword(s):  
Crack Initiation ◽  
High Strength Steel ◽  
Harmful Effect ◽  
High Strength Steels ◽  
High Strength ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Crack Initiation And Propagation ◽  
Initiation And Propagation ◽  
Ultra High Strength Steel

Specially designed SEM in-situ tensile and fatigue tests have been conducted to trace the entire process of crack initiation and propagation till fracture in an ultra-high strength steel MA250. TiN is a typical inclusion and its average size is in the range of 8~10μm in MA250 steel. The micro-mechanism of the effect of TiN inclusion on crack initiation and propagation at tensile and fatigue tests both have been studied in detail. Experimental results show the harmful effect of TiN on tensile and fatigue properties both. This work is helpful to establish the practical life prediction model for the characteristic inclusion parameters in ultra-high strength steel components. It also enlightens us to eliminate TiN in the further development of ultra-high strength steels.

scholarly journals Effect of Welding Methods on Fatigue Properties of Welded Joints of High Strength Steel Sheets for Automobiles

2005 ◽  
Vol 54 (9) ◽  
pp. 927-934 ◽  
Author(s):  
Hiroshi TSUDA ◽  
Yoshihiko SUNAYAMA ◽  
Masashi DAIMARUYA ◽  
Hidetoshi KOBAYASHI
Keyword(s):  
Welded Joints ◽  
High Strength Steel ◽  
High Strength ◽  
Fatigue Properties ◽  
Steel Sheets

Improvement of residual stress and fatigue properties of high-strength steel by low-pulse energy microchip laser

2021 ◽  
Author(s):  
Yoshio Mizuta ◽  
Yuji Sano ◽  
Satoshi Tamaki ◽  
Yoshihiro Sagisaka ◽  
Tomoharu Kato ◽  
...  
Keyword(s):  
Residual Stress ◽  
Pulse Energy ◽  
High Strength Steel ◽  
High Strength ◽  
Microchip Laser ◽  
Fatigue Properties
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