48 Result(s)
within
**an-Yu Wang
Engineering
Manufacturing, Machines, Tools, Processes
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Article
Modeling of Incubation Time for Austenite to Ferrite Phase Transformation
On the basis of the classical nucleation theory, a new model of incubation time for austenite to ferrite transformation has been developed, in which the effect of deformation on austenite has been taken into c...
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Article
Physical Properties and Regulating Mechanism of Fluoride-Free and Harmless B2 O3-Containing Mould Flux
The flux agents in common mould fluxes were fluoride and sodium oxide, which would do great harm to environments. B2 O3 was selected as flux. The physical properties of B2 O3-containing mould fluxes were studied....
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Article
Forward and Backward Slip Models in MAS Rolling Process and Its On-Line Application
Based on the MAS rolling process in plate mill, the mathematical models of forward and backward slips of the wedges at plate head and tail were derived. According to the new model, the difference between the f...
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Article
Numerical Simulation of Temperature Field and Thermal Stress Field of Work Roll During Hot Strip Rolling
Based on the thermal conduction equations, the threedimensional (3D) temperature field of a work roll was investigated using finite element method (FEM). The variations in the surface temperature of the work r...
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Article
High Efficient Technology of Steelmaking With Low Silicon Hot Metal on Large Converter
To resolve the difficulty in slag formation during steelmaking with low silicon hot metal and to increase productivity, a new 5-hole lance was developed by increasing oxygen flow from 50 000 m3/h to 60 000 m3/h. ...
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Article
Energy Method in Stretch Reducing Process of Steel Tube
According to the theories for stretch reducing process and steel tube plastic deformation, the energy method was used to mesh the rolled deformation zone of the steel tube into the upper limit elements, and an...
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Article
Improved electrical insulation of rare earth permanent magnetic materials with high magnetic properties
Rare earth permanent magnetic materials are typical electrical conductor, and their magnetic properties will decrease because of the eddy current effect, so it is difficult to keep them stable for a long enoug...
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Article
Application of Rietveld refinement to investigate the high chromium white cast iron austempered at different temperatures
The effect of austempering temperature on the microstructure and properties of a high chromium white cast iron was investigated with the Rietveld refinement method. The result shows that the upper bainite exis...
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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
Effect of Modification Treatment for Reduction of Dephosphorization Slag in Hot Metal Bath
To extract the valuable elements from the steel slag, a novel approach has been proposed by modification treatment to provide the stronger driving forces and accelerate the reduction. Three types of dephosphor...
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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
Improvement of Hole-Expansion Property for Medium Carbon Steels by Ultra Fast Cooling After Hot Strip Rolling
The improvement of hole-expansion properties for medium carbon steels by ultra fast cooling (UFC) after hot strip rolling was investigated. It was found that finely dispersed spherical cementite could be forme...
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Article
Upgrade Rolling Based on Ultra Fast Cooling Technology for C-Mn Steel
By measuring the expansion curves of a C-Mn steel at different cooling rates by using an MMS-300 thermomechanical simulator, continuous cooling transformation curves were obtained. The new process “ultra fast ...
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Article
Ultrafine Grained Duplex Structure Developed by ART-annealing in Cold Rolled Medium-Mn Steels
The microstructural evolutons of the cold rolled Fe-0. 1C-5Mn steel during intercrical annealing were examined using combined advanced techniques. It was demonstrated that intercrtical annealing results in an ...
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Article
Influences of austenization temperature and annealing time on duplex ultrafine microstructure and mechanical properties of medium mn steel
A duplex ultrafine microstructure in a medium manganese steel (0.2C-5Mn) was produced by austenite reverted transformation annealing (ART-annealing). The microstructural evolution during annealing was examined...
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Article
Microstructure and mechanical properties of precipitation strengthened fire resistant steel containing high Nb and low Mo
Through the thermo-mechanical control process (TMCP), a high Nb low Mo fire resistant steel with the yield strength (YS) of 521 MPa at room temperature (RT) and 360 MPa at elevated temperature (ET) of 600 °C w...
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Article
Effect of Microstructure on Hydrogen Induced Cracking Behavior of a High Deformability Pipeline Steel
The hydrogen induced cracking (HIC) behavior of a high deformability pipeline steel was investigated with three different dual-phase microstructures, ferrite and bainite (F+B), ferrite and martensite/austenite...
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Article
Mn Diffusion at Early Stage of Intercritical Annealing of 5Mn Steel
Mn distribution and austenite morphology at the early stage of intercritical annealing of 5Mn steel were investigated. It was experimentally demonstrated that a newly formed 20 nm-thick austenite was formed wi...
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Article
Work Hardening Behavior and Stability of Retained Austenite for Quenched and Partitioned Steels
Both microstructure and mechanical properties of low alloy steels treated by quenching and partitioning (Q&P) process were examined. The mixed microstructure of martensite and large-fractioned retained austeni...
