Influence of hot rolling conditions on the mechanical properties of hot rolled TRIP steel

Zhuang, Łi; Wu, Di

doi:10.1007/s11595-006-1074-1

Cited by 14 publications

(9 citation statements)

References 12 publications

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“…At low temperature, the grain size is small as a result high density of grain boundaries occurs which hinders the movement of dislocations, results in enhancement of yield strength. 40,41…”

Section: Resultsmentioning

confidence: 99%

Effect of pre-rolling temperature on the interfacial properties and formability of steel-steel bilayer sheet in Single Point Incremental Forming

Hassan

Hussain

Ali

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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The aim of this research was to investigate the effect of pre-rolling temperature on the interfacial properties in delamination modes 1 and 2; and formability in Single Point Incremental Forming (SPIF) of Steel-Steel (St-St) bilayer sheet prepared by roll bonding process. The roll bonding process was performed at three pre-rolling temperatures, 700°C, 800°C, and 950°C, with a constant thickness reduction ratio of 58%. The bond strength and critical strain energy release rate (CSERR) were measured to characterize the interface of St-St bilayer sheet. T-peel test for mode 1 and tensile shear test for mode 2 were conducted to determine the interfacial properties. The formability of St-St bilayer sheet in SPIF was measured in terms of maximum wall angle. The results showed that the increase in pre-rolling temperature from 700°C to 950°C enhanced the bond strength and CSERR, in both mode 1 and 2. The enhancement in bond strength with an increase in pre-rolling temperature was 149.5% and 203% in mode 1 and 2, respectively. However, the increase in CSERR in mode 1 and 2 was 115% and 367%, respectively. The formability of St-St bilayer sheet also showed an increasing trend with an increase in pre-rolling temperature. Moreover, a consistent relation between formability and interfacial parameters was observed. It was also found that to successively deform the bilayer sheet into the desired shape, it is necessary for the sheet to be heated above the critical temperature during fabrication to facilitate good bonding between two sheets.

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“…At low temperature, the grain size is small as a result high density of grain boundaries occurs which hinders the movement of dislocations, results in enhancement of yield strength. 40,41…”

Section: Resultsmentioning

confidence: 99%

Effect of pre-rolling temperature on the interfacial properties and formability of steel-steel bilayer sheet in Single Point Incremental Forming

Hassan

Hussain

Ali

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…DSIT hot rolling of steels is also known to be a complicated thermomechanical process, during which steels will experience both deformation and dynamic phase transformation [2,3]. The microstructures and properties of the steel sheets produced by the DSIT process are impacted by several variables, such as rolling force and temperature, reduction rate, rolling pass and cooling rate [4,5]. An understanding of rolling force, temperature field, and stress-stain field of steels is necessary to optimize the DSIT process; however, the experimental data that can be measured during rolling processes are limited [6].…”

Section: Introductionmentioning

confidence: 99%

Study of the Dynamic Strain-Induced Transformation Process of a Low-Carbon Steel: Experiment and Finite Element Simulation

He¹,

Ruan²,

Chen³

et al. 2016

Advances in Materials Science and Engineering

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The microstructures and mechanical properties of a low-carbon steel, hot-rolled by a six-pass dynamic strain-induced transformation (DSIT) process, with different start rolling temperatures, are studied by combining experiments and finite element simulations. The start rolling temperatures of the last three passes are about 10°C higher and 20°C lower than theAr3temperature, for Processes 1 and 2, respectively. The results show that as the rolling process proceeds, rolling forces increase, while slab temperatures decrease. Before starting Pass 4, the temperature of the slab center is higher than that of the slab surface. During Pass 4 to Pass 6, however, the temperatures of the slab center and surface are nearly identical but fluctuate remarkably due to the large reduction rate. The simulated maximum rolling force and start rolling temperature of each pass agree reasonably with the experimental measurements. It is found that the simulated start temperatures of the slab center in the last three passes are about 5~25°C higher than theAr3temperature for Process 1, and the DSIT condition is better satisfied for Process 2. As a result, Process 2 produces finer grain sizes and higher yield strengths than Process 1.

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“…Thermomechanical processing can improve the microstructures and mechanical properties of low carbon steels [5][6][7]. The control of rolling temperature at the beginning of and during deformation is critical to producing a uniform region of ultrafine equiaxed ferrite [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The control of rolling temperature at the beginning of and during deformation is critical to producing a uniform region of ultrafine equiaxed ferrite [8,9]. Low carbon steel with controlled rolling and cooling process can offer several performance characteristics which are superior to the conventional thermal treated medium-carbon cold forging steel [7]. It is an ideal process to eliminate the need of thermal treatment for cold forging steel production because employing thermomechanical controlled processing (TMCP) can meet the demands of raw material [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermomechanical Processing on the Microstructure and Mechanical Properties of Low Carbon Steel

Shao¹,

Wang²,

Zhuang³

et al. 2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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Keywords: Low carbon steel; fast cooling; the mechanical properties; standard requirement. Abstract. Effect of thermomechanical processing on the mechanical properties of low carbon cold forging steel was investigated for different processing parameters on a laboratory hot rolling mill. Fast cooling is a key factor in thermomechanical processing. The mechanical properties of specimen 2 which was fast cooled from high finish rolling temperature exceed the standard requirement of ML30 Steel. This is attributed to the presence of substantial amounts of pearlite. Finish rolling temperature also affects the mechanical properties of steels. Low temperature rolling results in the ferrite-grain refinement. The mechanical properties of the specimen 4 exceed the standard requirement of ML25 Steel.

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Influence of hot rolling conditions on the mechanical properties of hot rolled TRIP steel

Cited by 14 publications

References 12 publications

Effect of pre-rolling temperature on the interfacial properties and formability of steel-steel bilayer sheet in Single Point Incremental Forming

Effect of pre-rolling temperature on the interfacial properties and formability of steel-steel bilayer sheet in Single Point Incremental Forming

Study of the Dynamic Strain-Induced Transformation Process of a Low-Carbon Steel: Experiment and Finite Element Simulation

Effect of Thermomechanical Processing on the Microstructure and Mechanical Properties of Low Carbon Steel

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