Hysteretic Features of Low Yield Point Steel and its Influence on Shear Plate Damper Behavior

2018 ◽  
Vol 763 ◽  
pp. 718-725
Author(s):  
Qun He ◽  
Yi Yi Chen ◽  
Wei Wang ◽  
Hai Tian
Keyword(s):  
Carbon Steel ◽  
Yield Point ◽  
Loading Condition ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Low Alloy Steel ◽  
Cyclic Loading Condition ◽  
Cyclic Tension ◽  
Shear Plate ◽  
Tension And Compression

The hysteretic features of low yield point steel LYP100 is experimentally studied by using very short coupons under cyclic tension and compression till to the strain amplitude of ±8%. The features of this steel are compared with commonly used low carbon steel and low alloy steel in structural construction. It is shown that with the increase of strain amplitudes under cyclic loading condition the hardening effect is more distinguished in the case of LYP steel than that of the commonly used structural steel. When the shear plate damper is made of LYP steel, its behavior is largely affected by the material hysteretic features.

Review on the Hall-Petch Relation in Ferritic Steel

2010 ◽  
Vol 654-656 ◽  
pp. 11-16 ◽  
Author(s):  
Setsuo Takaki
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Yield Strength ◽  
Yield Point ◽  
Ferritic Steel ◽  
Low Carbon Steel ◽  
Aging Treatment ◽  
Interstitial Free ◽  
Low Carbon ◽  
Petch Relation

Yielding of polycrystalline low carbon steel is characterized by a clear yield point followed by unstable Lüders deformation and such a yielding behavior is taken over to fine grained steel with the grain size of 1μm or less. Yield strength of ferritic steel is increased with grain refinement standing on the Hall-Petch relation. The following equation is realized up to 0.2μm grain size in the relation between yield strength y and grain size d: y [MPa]= 100+600×d[μm]-1/2. In low carbon steel, it might be concluded that the Hall-Petch coefficient (ky) is around 600MPa•μm1/2. However, the ky value of interstitial free steels is substantially small as 130-180MPa•μm1/2 and it can be greatly increased by a small amount of solute carbon less than 20ppm. It was also cleared that the disappearance of yield point by purifying is due to the decrease in the ky value. On the other hand, the ky value is changeable depending on heat treatment conditions such as cooling condition from an elevated temperature and aging treatment at 90°C. These results suggest the contribution of carbon segregation at grain boundary in terms of the change in the ky value. On the contrary, substitutional elements such as Cr and Si do not give large influence to the ky value in comparison with the effect by carbon.

scholarly journals Grain Boundary Pop-in, Yield Point Phenomenon and Carbon Segregation in Aged Low Carbon Steel

2018 ◽  
Vol 58 (2) ◽  
pp. 373-375 ◽  
Author(s):  
Zhengyan Shen ◽  
Bilei Wang ◽  
Gaofei Liang ◽  
Yunhu Zhang ◽  
Ke Han ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Grain Boundary ◽  
Yield Point ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Carbon Segregation ◽  
Yield Point Phenomenon

Study on Low-Alloy Coupled Steel Technological Applications

2011 ◽  
Vol 230-232 ◽  
pp. 159-163
Author(s):  
Bing Gao ◽  
Bo Wang ◽  
Jian Qi Zou
Keyword(s):  
Carbon Steel ◽  
Alloy Steel ◽  
Crack Width ◽  
Low Carbon Steel ◽  
Transverse Reinforcement ◽  
Longitudinal Reinforcement ◽  
Paper Study ◽  
Low Carbon ◽  
Low Alloy Steel ◽  
Steel Bars

Low-alloy steel coupled steel bars is formed to ladder-framework by two parallel cold-drawn that’s they are longitudinal reinforcement wedding with short and band cold-drawn that’s low-carbon steel are transverse reinforcement. In this paper, study on its mechanical and technology properties. So, get suggestion model calculating formulas of crack width and stiffness are presented. The advantages of cooperating between coupled steel bars and concrete have been primarily accepted.

The study of spring-back in wipe-bending processes for perforated components

2011 ◽  
Vol 225 (11) ◽  
pp. 2007-2014 ◽  
Author(s):  
M A Farsi ◽  
B Arezoo ◽  
V Alizadeh ◽  
S Mirzaee
Keyword(s):  
Finite Element ◽  
Carbon Steel ◽  
Sheet Metal ◽  
Low Carbon Steel ◽  
High Strength ◽  
Low Carbon ◽  
Low Alloy Steel ◽  
Spring Back ◽  
Bending Process ◽  
Component Material

Bending is one of the processes frequently used during manufacturing of sheet-metal components. Spring-back in bending operations is an important issue when producing precision parts. This issue becomes even more important when the component has any kind of hole on the bending surface. Such components are the focus of study in this paper. Many parameters affect spring-back in the bending process; in the present work, perforated components with an oblong cut are selected, and the influence of cut size, die radius, clearance, and component material on the value of the spring-back in a wipe-bending process are studied. Four different hole sizes, three die radii and clearance, and two different steel materials (high-strength low-alloy steel and low-carbon steel) are used in experiments and finite-element simulations. Results show these parameters have effect on the amount of spring-back in the wipe-bending process.

scholarly journals Influence of processing parameters on slab stickers during continuous casting

2020 ◽  
Vol 39 (1) ◽  
pp. 228-235
Author(s):  
Yu Liu ◽  
Yuanpeng Tian ◽  
Xudong Wang ◽  
Yali Gao
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Alloy Steel ◽  
Casting Speed ◽  
Low Carbon Steel ◽  
Processing Parameters ◽  
Slab Thickness ◽  
Low Carbon ◽  
Low Alloy Steel ◽  
Efficient Technology

AbstractIn this study, the parameters of 44 sticker breakout samples were analysed. The research mainly focused on the steel grades and slab thickness of stickers. Other processing parameters, such as slab width, casting speed, mould fluctuation, heat flux and operation, were also discussed. The results show that the number of stickers of low carbon steel and low alloy steel was 16 and 28, respectively. The stickers of low carbon steel were less than those of low alloy steel regardless of the thickness and width. The ratio of stickers per 1,000 casting heats of 220, 260 and 320 mm thickness slabs was 2.5, 0.5 and 0.6, respectively. The higher casting speed of 220 mm thickness slabs made the casting status unsteady and caused more stickers. From the perspective of width, the stickers were gradually increased along with the increase in width due to the worse mould slag. This study provides a foundation to reduce slab stickers and is helpful for a more efficient technology of continuous casting.

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