Influence of refining slag composition on cleanness and fatigue life of 60Si2MnA spring steel

2016 ◽  
Vol 43 (5) ◽  
pp. 340-350 ◽  
Author(s):  
Y. Hu ◽  
W. Q. Chen
Keyword(s):  
Fatigue Life ◽  
Slag Composition ◽  
Spring Steel ◽  
Refining Slag

scholarly journals Enhanced Axial Tension-tension Fatigue Resistance of a 51CrV4 Spring Steel by Cryogenic Treatment

2020 ◽  
Vol 72 (4) ◽  
pp. 138-151
Author(s):  
Chen Zhi ◽  
Gao Yuan ◽  
Yan Xian-Guo ◽  
Guo Hong ◽  
Huang Yao ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Cryogenic Treatment ◽  
Spring Steel ◽  
Thin Strip ◽  
Leaf Spring ◽  
Axial Tension ◽  
Axial Tensile ◽  
Tensile Fatigue ◽  
Conventional Heat Treatment ◽  
Dump Trucks

51CrV4 spring steel is widely used in heavy duty dump trucks ascribing to its superior mechanical properties. The fatigue life and strength of dump trucks are the main performance indicators that must be considered in the manufacturing process. Cryogenic treatment (CT) can improve the main performance of materials which has been proved by recently research. The effect of cryogenic treatment CT on the axial tensile fatigue strength of 51CrV4 spring steel was studied in this paper. The results showed that the axial tension-tension fatigue life of 51CrV4 spring steel after CT was significantly higher than conventional heat treatment (CHT) samples. The microstructure of 51CrV4 leaf spring material is mainly acicular bainite and thin strip martensite after CT. Compared with CHT, CT makes the microstructure of the material more compact. The introduction of cryogenic treatment (CT) before tempering makes the Ca element in the material aggregate, and the micro amount of Ca has the function of deoxidizing and desulphurizing and improving the morphology of sulfide, thus enhancing the fatigue life of the material.

Study on Enhancing Fatigue Life of SAE 9260 Spring Steel with Surface Defect Through Laser Shock Peening

2019 ◽  
Vol 28 (4) ◽  
pp. 2029-2035
Author(s):  
P. Ganesh ◽  
Arun K. Rai ◽  
Pushpendra K. Dwivedi ◽  
Abhijit Chowdhury ◽  
Ramakanta Biswal ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Surface Defect ◽  
Spring Steel ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Shock Peening

Interior-Induced Fracture Mechanism of High Cleanliness Spring Steel (JIS SWOSC-V) in Very High Cycle Regime

2015 ◽  
Vol 664 ◽  
pp. 209-218 ◽  
Author(s):  
Taku Miura ◽  
Takayuki Sakakibara ◽  
Takanori Kuno ◽  
Akira Ueno ◽  
Shoichi Kikuchi ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Life ◽  
Fatigue Fracture ◽  
Fracture Mode ◽  
Fracture Mechanism ◽  
Fatigue Crack Initiation ◽  
Fatigue Tests ◽  
Spring Steel ◽  
Topographic Analysis ◽  
Very High

In order to investigate the interior-induced fatigue crack propagation behavior of high cleanliness valve spring steel (JIS SWOSC-V), rotating bending fatigue tests were performed for various kinds of specimens with different hardness or surface finishings. The harder specimen with higher compressive residual stress showed longer fatigue life. The electrochemical polished specimen pre-treated with shot peening showed almost same fatigue life as the shot-peened specimen in spite of the difference in surface roughness. After fatigue tests, fracture surfaces were observed using a scanning electron microscope (SEM) to evaluate the fatigue fracture mechanism. Most specimens failed in surface-induced fracture mode due to high cleanliness; however, some specimens failed in interior-induced fracture mode in the very high cycle regime. Although non-metallic inclusions were not observed at interior fatigue crack initiation sites, 2 types of significant microstructures (with smooth surface or granular surface) were observed. EBSD analysis, profile analysis and computational simulation using a fracture surface topographic analysis (FRASTA) method were performed to investigate the mechanism of the interior-induced fatigue fracture caused by the microstructure at defect without any inclusion.

Influence of calcium treatment on cleanness and fatigue life of 60Si2MnA spring steel

2016 ◽  
Vol 44 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Y. Hu ◽  
W. Q. Chen ◽  
H. B. Han ◽  
R. J. Bai
Keyword(s):  
Fatigue Life ◽  
Spring Steel ◽  
Calcium Treatment

Inclusion evolution in 50CrVA spring steel by optimization of refining slag

2017 ◽  
Vol 24 (9) ◽  
pp. 879-887 ◽  
Author(s):  
Hai-yan Tang ◽  
Yong Wang ◽  
Guang-hui Wu ◽  
Peng Lan ◽  
Jia-quan Zhang
Keyword(s):  
Spring Steel ◽  
Refining Slag

scholarly journals Development of High Strength Valve Spring Steel with Excellent Fatigue Life Performance.

2000 ◽  
pp. 15-18 ◽  
Author(s):  
Nao YOSHIHARA ◽  
Takeshi KURODA ◽  
Hitoshi SATOH ◽  
Nobuhiko IBARAKI
Keyword(s):  
Fatigue Life ◽  
High Strength ◽  
Spring Steel ◽  
Valve Spring

EFFECT OF SHOT PEENING ON RESIDUAL STRESS AND FATIGUE LIFE OF A SPRING STEEL

1995 ◽  
Vol 18 (2) ◽  
pp. 211-220 ◽  
Author(s):  
G. H. Farrahi ◽  
J. L. Lebrijn ◽  
D. Couratin
Keyword(s):  
Residual Stress ◽  
Fatigue Life ◽  
Shot Peening ◽  
Spring Steel

scholarly journals Improving the cycle fatigue life of spring steel by a novel thermal cycling process

2021 ◽  
Author(s):  
Wangyang Hu ◽  
Jingkun Li ◽  
Kaisong Li ◽  
Tingjun Zhang ◽  
Xueping Ren
Keyword(s):  
Fatigue Life ◽  
Thermal Cycling ◽  
Spring Steel ◽  
Cycle Fatigue ◽  
Cycling Process ◽  
Thermal Cycling Process
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