Optimization of Cold Rolling and Subsequent Annealing Treatment on Mechanical Properties of TWIP Steel

2017 ◽  
Vol 26 (8) ◽  
pp. 3666-3675 ◽  
Author(s):  
D. Zamani ◽  
A. Golshan ◽  
G. Dini ◽  
Z. N. Ismarrubie ◽  
M. A. Azmah Hanim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Twip Steel ◽  
Annealing Treatment ◽  
Subsequent Annealing

scholarly journals Study of high-strength and high-conductivity Cu–Sn–Fe alloys

2016 ◽  
Vol 34 (1) ◽  
pp. 142-147 ◽  
Author(s):  
Junting Zhang ◽  
Xiaochao Cui ◽  
Jiankai Ma ◽  
Youhong Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Cold Rolling ◽  
Annealing Treatment ◽  
High Strength ◽  
High Conductivity ◽  
Subsequent Annealing ◽  
Cold Roll ◽  
Cast Alloys ◽  
Fe Alloys

AbstractCu–Sn–Fe alloys with different compositions were developed by casting, normalizing treatment, cold roll and subsequent annealing treatment. The results showed that the tensile strength and resistivity of the Cu–xSn–xFe alloys (where x represents wt.%) improved with increasing the content of Sn and Fe. Compared with the as-cast alloys, the resistivity and tensile strength of the Cu–xSn–xFe alloys after normalizing and cold rolling treatment increased. In addition, the resistivity and mechanical properties of the alloys after the annealing treatment were improved significantly. Finally, a conclusion could be drawn that the annealed Cu–2Sn–5Fe alloy had good mechanical properties and resistivity, and the values of the tensile strength, mechanical elongation and resistivity reached 552 MPa, 32 % and 1.92 μΩ cm, respectively.

Effect of Annealing Treatment on the Properties of Cold Rolled Copper Foil

2018 ◽  
Vol 921 ◽  
pp. 231-235
Author(s):  
Ke Bin Sun ◽  
Yan Feng Li ◽  
Ye Xin Jiang ◽  
Guo Jie Huang ◽  
Xue Shuai Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Cold Rolling ◽  
Copper Foil ◽  
Room Temperature ◽  
Annealing Treatment ◽  
Test Machine ◽  
Cold Rolled ◽  
Rolled Copper Foil ◽  
Fracture Morphologies

Copper foils with 91% cold rolled deformation annealed at temperature between 140°C and 170 °C.The microstructures were observed by EBSD. The mechanical properties were measured at room temperature by tensile test machine and the fracture morphologies observed by SEM. After annealed at 150 °C, recrystallization begins to occur, while the elongation increases evidently and tensile strength decreases sharply. When the temperature rises to 170 °C, recrystallization is complete and the grain starts to grow. When the foils are annealed at 140 °C, it exhibits a strong cold rolling textures characterized by Brass {011}<211> and Cu {112}<111>. After annealed at 170 °C, there are olny weak Brass {011}<211> texture.

scholarly journals Effect of annealing treatment on the microstructure and mechanical properties of Fe-18Mn-0.8C-0.2 V TWIP steel

2020 ◽  
Vol 6 (12) ◽  
pp. 1265h4
Author(s):  
Jingshan Zeng ◽  
Chaoyue Chen ◽  
Jiang Wang ◽  
Zhongming Ren ◽  
Wen Shi
Keyword(s):  
Mechanical Properties ◽  
Twip Steel ◽  
Annealing Treatment ◽  
Microstructure And Mechanical Properties

Microstructure Characteristics and Mechanical Properties of in-Situ Composite Steel Processed by Severe Cold-Rolling and Subsequent Annealing

2010 ◽  
Vol 168-170 ◽  
pp. 889-894
Author(s):  
Jun Zhao ◽  
Zhi Wang ◽  
Han Zhang ◽  
Hong Yan Zhai ◽  
Quan Xing Wen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Lath Martensite ◽  
Rolling Direction ◽  
High Strength ◽  
Subsequent Annealing ◽  
Microstructure Characteristics ◽  
In Situ Composite ◽  
Cold Rolled

In this paper, Q235 steel was investigated in order to manufacturing ultra-high strength material. The process of severe cold-rolling and low temperature annealing of lath martensite effectively reduced the crystal size from about 300 nm to 20 nm, and introduced mass weak interfaces in steel, has been demonstrated a new promising technique for producing in-situ composite multi-nanolayer steel with ultra-high strength (b 2112 MPa). Cold rolling and subsequent annealing have great impact on microstructure evolution as well as material mechanical properties. In the as-rolled state, the strength is approximately four times increased than as-received material (hot-rolled state, b 515 MPa), which is attributed to work hardening and grain refining during cold rolling. As the cold-rolled sample subjected to further annealing below 500 , deformed microstructure underwent further recovery and recrystallization, finally became refined equiaxed grains, microstructure characteristics along rolling direction arrangement was decreased; In addition to ultrafine ferrite grains, nano-carbides precipitated uniformly in the specimen annealed at 500 , total elongation increased to 16%, the corresponding yield strength was 1208MPa, much higher than that of as-received samples. The phenomenon of fracture delamination was observed from the specimens, which were cold-rolled and annealed at 500 , and the delamination plane was parallel to the rolling plane. In-situ composite weak interfaces effect has great impact on the fracture surface.

Ultrafine-Grained Structure and Mechanical Properties of a High-Mn Twinning Induced Plasticity Steel

2016 ◽  
Vol 838-839 ◽  
pp. 392-397 ◽  
Author(s):  
Pavel Kusakin ◽  
Andrey Belyakov ◽  
Rustam Kaibyshev ◽  
Dmitri Molodov
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Cold Rolling ◽  
Twip Steel ◽  
True Strain ◽  
Total Elongation ◽  
Recrystallization Annealing

The influence of thermo-mechanical treatment consisting of cold rolling followed by recrystallization annealing on the grain size and mechanical properties of a high-Mn TWIP steel was studied. An Fe-23Mn-0.3C-1.5Al TWIP steel (wt. %) was subjected to extensive cold rolling with a reduction of 80% (true strain of ∼1.6) and then annealed in the temperature interval ranging from 400 to 900 °C during 20 minutes. Recovery processes took place below 500 °C, partial recrystallization was evident at ~550°C and fully recrystallized structure evolved after annealing at 600 °C and higher. The static recovery resulted in a slight decrease in the yield strength from 1400 MPa to 1250 MPa and the ultimate tensile strength from 1540 MPa to 1400 MPa whereas the total elongation of 4% did not changed. The recrystallization development led to a drastic drop of strength and an increase in ductility. The yield strength of 225 MPa, the ultimate tensile strength of 700 MPa and the total elongation of 79% was obtained after annealing at 900 °C. Correspondingly, the grain size increased from 0.2 μm to 6.2 μm with increase in anneal temperature from 550 to 900°C.

Effect of Cold Rolling and Heat Treatment on Microstructure and Mechanical Properties of Pt-0.7Ti Microalloy

2015 ◽  
Vol 817 ◽  
pp. 645-650
Author(s):  
Qiong Zhao ◽  
Xiao Ge Zhang ◽  
Ye Fan ◽  
Guo Yi Qin ◽  
Si Yong Xu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Solid Solution ◽  
Cold Rolling ◽  
Annealing Treatment ◽  
Recrystallization Temperature ◽  
Micro Hardness ◽  
Solid Solution Strengthening ◽  
Solution Strengthening ◽  
Rolling Deformation

The effects of cold rolling, solid solution, aging and annealing treatment on Pt-0.7Ti microalloy were investigated in this study. The microstructures of Pt-0.7Ti microalloy and the precipitated ordered phase Pt8Ti were observed and analyzed by OM, TEM, XRD. The mechanical properties of the alloy were evaluated Vicker micro-hardness. The results showed that micro amount of Ti was an effective element for solid-solution strengthening of Pt, the micro-hardness of 97% deformation for ST and ST+AG samples increased to 214HVand 224HV, respectively, which almost are double that of pure Pt. Micro-amount of long range ordered phase Pt8Ti was precipitated during the heat treatment, but the effect of order hardening in Pt-0.7Ti microalloy was not obvious. The microhardness by large rolling deformation for quenched samples almost unchanged after an annealing below 500°C for 1h, but decreased significantly at 700°C, and the recrystallization temperature was risen by 200°C than that of pure Pt.

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