77 Result(s)
within
Guo-dong Wang
Manufacturing, Machines, Tools, Processes
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Article
Evolution of Through-Thickness Texture in Ultra Purified 17 %Cr Ferritic Stainless Steels
Texture inhomogeneity usually takes place in ferritic stainless steels due to the lack of phase transformation and recrystallization during hot strip rolling, which can deteriorate the formability of final she...
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Article
Optimal Heating in Heat-Treatment Process Based on Grey Asynchronous Particle Swarm Optimization
To ensure plate heating quality and reduce energy consumption in heat-treatment process, optimal heating for plates in a roller hearth furnace was investigated and a new strategy for heating procedure optimiza...
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Article
Rolling With Simplified Stream Function Velocity and Strain Rate Vector Inner Product
The dual-stream function velocity field is reduced in order to analyze two-dimensional plate broadside rolling in roughing. The strain rate vector inner product and integral mean value theorem, as well as co-l...
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Article
Microstructure Evolving Behaviors of Undercooled Ultrafine Austenite Grains During Deformation
Samples with ultrafine grained austenite were prepared by repetitive rapid heating and quenching for three times and were used to investigate the dynamic microstructural evolving behaviors at different tempera...
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Article
Crack Properties of Lean Duplex Stainless Steel 2101 in Hot Forming Processes
The crack behavior of LDX 2101 by hot compression tests in the temperature range of 950 to 1 150 °C and strain rate range of 0.01 to 30 s−1 was studied. The hot workability map of LDX 2101 was constructed and the...
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Article
Formation of Phosphorous Surface Inverse Segregation in Twin-Roll Cast Strips of Low-Carbon Steels
The formation of phosphorous surface inverse segregation (SIS) in twin-roll cast strips of low-carbon steels was studied. High phosphorous strips were fabricated by using a pilot twin-roll strip caster and a m...
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Article
Effects of twin-dislocation and twin-twin interactions on the strain hardening behavior of TWIP steels
Tensile tests of Fe-30Mn-5Si-2Al steel were carried out for different strains of 0.05, 0.14, 0.26, and up to the strain-to-failure in order to observe the evolution of microstructure during deformation and inv...
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Article
Development of Ti-Microalloyed 600 MPa hot rolled high strength steel
A high strength steel with yield strength on the order of 600 MPa was developed successfully with only addition of titanium alloying element based on a low-carbon steel. The results showed that the hot deforma...
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Article
Factors affecting temperature distribution along thickness of plate during cooling process and their control strategies
On the basis of the finite difference method, the factors affecting the temperature distribution along the thickness of plate during cooling process were analyzed, which include transformation heat, coefficien...
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Article
Derivation of plastic specific work rate for equal area yield criterion and its application to rolling
On the basis of the analysis of the hexagons inscribed and circumscribed of the Mises yield circle on the π-plane in Haigh Westergaard stress space, a new equation called equal area linear yield criterion or E...
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Article
Construction and application of quenching critical cooling rate model
Based on exploring quenching mechanism, three types of quenching critical cooling rate models of medium-carbon steel and low-carbon steel and low-alloy construction steel were established, as modified Maynier ...
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Article
Development of strip flatness and crown control model for hot strip mills
The strip flatness and crown control model is the foundation of automatic strip shape control. Considering the metal transverse flows and the inter stand second deformation, the trip flatness and crown control...
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Article
Microstructure transformation behaviour of 610 MPa HSLA steel plate for 150000 m3 oil storage tank construction
Static and dynamic continuous cooling transformations (CCT) of 610 MPa HSLA steel plate for 150000m3 oil storage tank construction were measured by using an MMS200 thermomechanical simulation system. It was found...
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Article
Texture evolution in ferritic rolled Ti-IF steel during cold rolling
The texture evolution of ferritic hot rolled Ti-IF steel during cold rolling was investigated in which the reduction was from 15% to 85%. It was found that a fibre texture was monotonously intensified with the...
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Article
Application of geometric midline yield criterion for strip drawing
A new linear yield criterion expressed by the geometric midline of error triangle between Tresca and Twin shear stress yield loci on the π-plane in Haigh-Westergaard space was introduced. The criterion was wri...
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Article
Development of Nb-V-Ti hot-rolled high strength steel with fine ferrite and precipitation strengthening
A hot-rolled steel with high yield strength of 700 MPa, good elongation of about 20% and low ductile-brittle transition temperature (DBTT) lower than −70°C has been developed in laboratory. The results show th...
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Article
Analysis of rolling pressure in asymmetrical rolling process by slab method
The plane strain asymmetrical rolling was analyzed using slab method. The contact arc was replaced by parabola, and the constant surface friction status was adopted during the analysis. The deformation area wa...
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Article
Effect of warm-rolled pearlite microstructural features on austenitic transformation
The austenite transformation characteristics for various warm-rolled pearlite during rapid heating were investigated. The results indicate that the start temperature (Ts) is sensitive to the microstructural featu...
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Article
Artificial neural network modeling of microstructure during C-Mn and HSLA plate rolling
An artificial neural network (ANN) model for predicting transformed microstructure in conventional rolling process and thermomechanical controlled process (TMCP) is proposed. The model uses austenite grain siz...
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Article
New Method for Evaluating Thermal Wear of Rolls in Rolling Process
A new method was developed by a thermal wear machine to evaluate the thermal wear of rolls in steel rolling process. The steel strip and rolls were simulated by upper and lower heating disks. The upper heating...
