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Article
Novel analytical heat source model for cold rolling based on an energy method and unified yield criterion
Accurate calculation of the heat source in the roll gap during the cold rolling process is the basis for a well-designed coolant system, which is particularly important for reducing roll wear and improving the...
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Article
Optimization solution of vertical rolling force using unified yield criterion
Vertical rolling is an important technique used to control the width of continuous casting slabs in the hot-rolling field. Accurate prediction of vertical rolling force is a core point maintaining rolling-mill...
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Article
Flatness maintenance and roughness reduction of silicon mirror in chemical mechanical polishing process
As an important optical component in laser system, silicon mirror surface is required to have micron-level flatness and subnanometer-level roughness. The research concentrates on how to improve roughness as fa...
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Article
Surface figure control in fine rotation grinding process of thick silicon mirror
With the rapid development of high-energy laser system, thick silicon mirror, as an important optical component to reflect laser, is required to have a surface with micron-level flatness, which poses significa...
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Article
Microstructure, Composition, and Impact Toughness Across the Fusion Line of High-Strength Bainitic Steel Weldments
This paper analyzed the evolution of microstructure, composition, and impact toughness across the fusion line of high-strength bainitic steel weldments with different heat inputs. The main purpose was to devel...
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Article
Application of parabolic velocity field for the deformation analysis in hot tandem rolling
A parabolic velocity field is proposed to get the minimum required rolling force in hot rolling process, the equal area yield criterion is used to calculate the plastic deformation power, the collinear vector ...
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Article
Analysis of edge rolling based on continuous symmetric parabola curves
Edge rolling plays a vital role in width control of strip rolling, where plastic deformation concentrates in the edge of the slab. Then, the center of the slab remains its initial shape. The local deformation ...
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Article
Phase transformation, microstructure, and mechanical properties of X100 pipeline steels based on TMCP and HTP concepts
This work described the manufacture of hot rolled X100 pipeline steels at the laboratory based on thermomechanically controlled processing (TMCP) and high-temperature processing (HTP) concepts. Continuous cool...
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Article
The calculation of vertical rolling force by using angular bisector yield criterion and Pavlov principle
The automatic width control of the strip that is used in vertical rolling is a key issue in the hot strip rolling process. It is the first time that the internal deformation power and the friction power are ob...
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Chapter and Conference Paper
Kinetics Modelling of Isothermal Bainite Transformation in Low Carbon Multi-Microalloyed Steel
In this work, the isothermal bainite transformation in a low carbon multi-microalloyed steel was investigated using a dilatometer. Two different transformation behaviors were identified according to the measur...
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Chapter and Conference Paper
Analysis of Hot Rolling with Simplified Weighted Velocity Field and My Criterion
The weighted velocity field is simplified in analysis of three-dimensional plate hot rolling. A new yield criterion called mean yield criterion is also used in integral of plastic deformation power of the roll...
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Article
A kinematic model describing particle movement near a surface as effected by Brownian motion and electrostatic and Van der Waals forces
Nanoparticle movement near a surface is greatly influenced by electrostatic and Van der Waals forces between the particle and the surface, as well as by Brownian motion. In this paper, several precise equation...
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Article
Deduction of geometrical approximation yield criterion and its application
A new linear yield criterion, referred to as geometrical approximation (GA) yield criterion, is proposed in this paper. On the π-plane in Haigh Westergaard stress space, its locus is an equilateral and non-equ...
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Article
Open AccessChemical mechanical polishing: Theory and experiment
For several decades, chemical mechanical polishing (CMP) has been the most widely used planarization method in integrated circuits manufacturing. The final polishing results are affected by many factors relate...
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Article
Effect of slurry injection position on material removal in chemical mechanical planarization
In this paper, the effect of slurry injection position on removal rate and nonuniformity was experimentally investigated on a 300-mm polisher developed by the authors, and the effect of slurry injection positi...
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Article
Effect of direct quenching on microstructure and mechanical properties of a wear-resistant steel
A wear-resistant steel was hot rolled at the same finish temperature, and subsequently treated with conventional reheat quenching and tempering process (RQ&T) and direct quenching and tempering process (DQ&T),...
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Article
Contact stress non-uniformity of wafer surface for multi-zone chemical mechanical polishing process
A finite element analysis (FEA) model is developed for the chemical-mechanical polishing (CMP) process on the basis of a 12-in five-zone polishing head. The proposed FEA model shows that the contact stress non...
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Article
Effect of reheat temperature on continuous cooling bainite transformation behavior in low carbon microalloyed steel
The effect of reheat temperature on continuous cooling bainite transformation in a low carbon microalloyed steel was investigated using a dilatometer based on welding thermal simulation process. The variation ...
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Article
Microstructural evolution and toughness in the HAZ of submerged arc welded low welding crack susceptibility steel
Microstructural characteristics of different sub-regions of heat affected zone (HAZ) of low welding crack susceptibility steel weldment were investigated by using optical microscopy and scanning electron micro...
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Article
Analysis of martensite–austenite constituent and its effect on toughness in submerged arc welded joint of low carbon bainitic steel
Martensite–austenite (M–A) constituent formed during welding is generally recognized as an important factor to decrease the toughness of welded joint. In this article, the morphology and chemical composition o...
