scholarly journals Effect of cooling process on mechanical properties of thin-gauge hot-rolled dual-phase steel

2019 ◽  
Vol 474 ◽  
pp. 012020
Author(s):  
B Liu ◽  
R Wu ◽  
J Hu
Keyword(s):  
Mechanical Properties ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Cooling Process ◽  
Hot Rolled

The Effect of Large Reduction on the Microstructure and Properties for As-Hot Rolled Dual-Phase Nb-Bearing Steel

2011 ◽  
Vol 284-286 ◽  
pp. 1101-1105
Author(s):  
Hong Mei Zhang ◽  
Li Feng Qiao
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Dual Phase Steel ◽  
Bearing Steel ◽  
Dual Phase ◽  
Large Reduction ◽  
Microstructure Refinement ◽  
The Matrix ◽  
Hot Rolled

The effect of reduction on the microstructure refinement and mechanical properties of the as-hot rolled dual-phase Nb-bearing steel were studied at laboratory. It is found that the dual-phase steel displays clearly classic dual phase morphology which is ferrite and martensite or bainsite, and the fine island or lath martinsite is dispersed on the matrix of ferrite by the observation of microstructure. The grain can be refined, and the increased precipitated second particles are fined and dispersed with the increasing of reduction. The mechanical properties determination result shows that the mechanical properties have greatly improved by large reduction. The tensile strength obtained in the laboratory is up to 680MPa, the ratio of yield strength and tensile strength is low, and the elongation is better.

A Study of the Microstructure and Mechanical Properties of C-Si-Mn Hot Rolled Dual Phase Steel

2013 ◽  
Vol 690-693 ◽  
pp. 2191-2194
Author(s):  
Bin Bin Sun ◽  
Zhi Wei Jia
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Dual Phase Steel ◽  
Modeling Method ◽  
Dual Phase ◽  
Microstructure And Mechanical Properties ◽  
Two Factors ◽  
Experimental Trend ◽  
Hot Rolled

The effects of the microstructure properties on the mechanical properties of C-Si-Mn hot rolled dual phase steel are reported. It was observed that both the amounts of the martensite and the particle size of the ferrite significantly influence the mechanical properties of hot rolled dual phase steel. The aim of our works is to develop a modeling method for controlling the microstructure properties of C-Si-Mn hot rolled dual phase steel through the experimental trend comparison of the aforementioned two factors on their mechanical properties.

Effects of Finish-Rolling Reduction on Microstructure and Mechanical Properties for C-Si-Mn Hot Rolled Dual-Phase Steel

2011 ◽  
Vol 339 ◽  
pp. 215-218
Author(s):  
Bin Bin Sun ◽  
Zhi Wei Jia ◽  
Hong Mei Zhang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Dual Phase Steel ◽  
Lath Martensite ◽  
Rolling Reduction ◽  
Dual Phase ◽  
Fine Grain ◽  
Microstructure And Mechanical Properties ◽  
Finish Rolling ◽  
Hot Rolled

The experiments were carried out on the φ450 hot rolling mill at the State Key laboratory of Rolling and Automatic of Northeastern University. The effect of different finish-rolling reduction on the microstructure and mechanical properties of C-Si-Mn hot rolled dual-phase steel were studied. It is found that the grain size of the ferrite would be finer with the increasing of finish-rolling reduction. Through the controlling of the finish-rolling reduction, grain size of the ferrite can be finer, so the better properties can be obtained by fine grain and sub-grain strengthened. With the low volume of lath martensite, the elongation of sample is high, the yield-strength ratio is low, and complex properties are better.

scholarly journals Precipitation behavior and mechanical properties of a hot rolled Ti-bearing dual phase steel

2016 ◽  
Vol 673 ◽  
pp. 213-221 ◽  
Author(s):  
Cheng-Ning Li ◽  
Xiao-Lei Li ◽  
Guo Yuan ◽  
R.D.K. Misra ◽  
Jian Kang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Precipitation Behavior ◽  
Hot Rolled

Study of Microstructure and Mechanical Properties of Hot-Rolled Ultra-High Strength Ferrite-Bainite Dual Phase Steel

2018 ◽  
Vol 921 ◽  
pp. 208-213 ◽  
Author(s):  
Zhuang Li ◽  
Wei Lv
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Dual Phase Steel ◽  
High Strength ◽  
Dual Phase ◽  
Finish Rolling ◽  
Fast Cooling ◽  
Hot Rolled ◽  
Low Temperature Rolling

Effects of thermo-mechanical control processing (TMCP) on microstructure and mechanical properties of hot-rolled ultra-high strength ferrite-bainite dual phase steel were investigated on a laboratory hot rolling mill. The results have shown that the microstructure containing ferrite and bainite can be obtained by TMCP. Ultimate tensile strength of all the specimens exceeded 1000MPa. Finish rolling temperatures affect the mechanical properties of ultra-high strength ferrite-bainite dual phase steel. Ultimate tensile strength reached 1078MPa at relatively low finish rolling temperature because of the ferrite grains refined. Fast cooling after low temperature rolling results in the ferrite grains refined and the formation of martensite islands. As a result, the product of ultimate tensile strength and total elongation (Rm×A50) of specimen 4 with fast cooling after low temperature rolling reaches the maximum value (18096MPa%).

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