Improvement of Low-Cycle Fatigue Resistance in TWIP Steel by Regulating the Strength Distribution

2019 ◽  
Author(s):  
C.W. Shao ◽  
Zhefeng Zhang
Keyword(s):  
Fatigue Resistance ◽  
Twip Steel ◽  
Low Cycle Fatigue ◽  
Strength Distribution ◽  
Cycle Fatigue

Improvement of low-cycle fatigue resistance in TWIP steel by regulating the grain size and distribution

2017 ◽  
Vol 134 ◽  
pp. 128-142 ◽  
Author(s):  
C.W. Shao ◽  
P. Zhang ◽  
Y.K. Zhu ◽  
Z.J. Zhang ◽  
J.C. Pang ◽  
...  
Keyword(s):  
Grain Size ◽  
Fatigue Resistance ◽  
Twip Steel ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

scholarly journals Effect of Sandblasting on Low and High-Cycle Fatigue Behaviour after Mechanical Cutting of a Twinning-Induced Plasticity Steel

2018 ◽  
Vol 165 ◽  
pp. 18002
Author(s):  
Antoni Lara ◽  
Mercè Roca ◽  
Sergi Parareda ◽  
Núria Cuadrado ◽  
Jessica Calvo ◽  
...  
Keyword(s):  
High Cycle Fatigue ◽  
Twip Steel ◽  
Low Cycle Fatigue ◽  
Load Ratio ◽  
Fatigue Behaviour ◽  
Cycle Fatigue ◽  
High Manganese ◽  
Amplitude Control ◽  
Cut Edge ◽  
Mechanical Cutting

In the last years, car bodies are increasingly made with new advanced high-strength steels, for both lightweighting and safety purposes. Among these new steels, high-manganese or TWIP steels exhibit a promising combination of strength and toughness, arising from the austenitic structure, strengthened by C, and from the twinning induced plasticity effect. Mechanical cutting such as punching or shearing is widely used for the manufacturing of car body components. This method is known to bring about a very clear plastic deformation and therefore causes a significant increase of mechanical stress and micro-hardness in the zone adjacent to the cut edge. To improve the cut edge quality, surface treatments, such as sandblasting, are often used. This surface treatment generates a compressive residual stress layer in the subsurface region. The monotonic tensile properties and deformation mechanisms of these steels have been extensively studied, as well as the effect of grain size and distribution and chemical composition on fatigue behaviour; however, there is not so much documentation about the fatigue performance of these steels cut using different strategies. Thus, the aim of this work is to analyse the fatigue behaviour of a TWIP steel after mechanical cutting with and without sandblasting in Low and High-Cycle Fatigue regimes. The fatigue behaviour has been determined at room temperature with tensile samples tested with a load ratio of 0.1 and load amplitude control to analyse High-Cycle Fatigue behaviour; and a load ratio of -1 and strain amplitude control to determine the Low-Cycle Fatigue behaviour. Samples were cut by shearing with a clearance value of 5%. Afterwards, a part of the cut specimens were manually blasted using glass microspheres of 40 to 95 microns of diameter as abrasive media. The results show a beneficial effect of the sandblasting process in fatigue behaviour in both regimes, load amplitude control (HCF) and strain amplitude control (LCF) tests, when these magnitudes are low, while no significant differences are observed with higher amplitudes. low-cycle fatigue, high-cycle fatigue, mechanical cutting, sandblasting, high manganese steel, TWIP steel

Low cycle fatigue resistance of SA533 pressure vessel steels

2003 ◽  
Vol 19 (11) ◽  
pp. 1575-1584 ◽  
Author(s):  
J. Y. Huang ◽  
J. R. Hwang ◽  
R. C. Kuo ◽  
C. Y. Chen
Keyword(s):  
Fatigue Resistance ◽  
Pressure Vessel ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Pressure Vessel Steels

Low-cycle fatigue resistance of AD1 aluminum and AMg5 aluminum alloy

1985 ◽  
Vol 21 (2) ◽  
pp. 66-68 ◽  
Author(s):  
A. A. Kholodilo ◽  
L. M. Balyuk ◽  
R. V. Modestova
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Resistance ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Amg5 Aluminum Alloy

Effect of PVD coatings on the strain and low-cycle fatigue resistance of stainless steel and titanium alloys

2011 ◽  
Vol 43 (6) ◽  
pp. 604-614 ◽  
Author(s):  
A. P. Gopkalo ◽  
N. R. Muzyka ◽  
A. V. Rutkovskii ◽  
V. P. Shvets
Keyword(s):  
Stainless Steel ◽  
Titanium Alloys ◽  
Fatigue Resistance ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Pvd Coatings
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