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| 1 | CALTPP:A general program to calculate thermophysical properties显示文摘A program CALTPP(CALculation of ThermoPhysical Properties)is developed in order to provide various thermophysical properties such as diffusion coefficient,interfacial energy,thermal conductivity,viscosity and molar volume mainly as function of temperature and composition.These thermophysical properties are very important inputs for microstructure simulations and mechanical property predictions.The general structure of CALTPP is briefly described,and the CALPHAD-type models for the description of these thermophysical properties are presented.The CALTPP program contains the input module,calculation and/or optimization modules and output module.A few case studies including(a)the calculation of diffusion coefficient and optimization of atomic mobility,(b)the calculation of solid/liquid,coherent solid/solid and liquid/liquid interfacial energies,(c)the calculation of thermal conductivity,(d)the calculation of viscosity,and(e)the establishment of molar volume database in binary and ternary alloys are demonstrated to show the features of CALTPP.It is expected that CALTPP will be an effective contribution in both scientific research and education. | Yuling Liu Cong Zhang Changfa Du Yong Du Zhoushun Zheng Shuhong Liu Lei Huang Shiyi Wen Youliang Jin Huaqing Zhang Fan Zhang George Kaptay | 2020 | Journal of Materials Science & Technology2020，42，7： | 2 |
| 2 | Optimizing mechanical properties of magnesium alloys by philosophy of thermo-kinetic synergy:Review and outlook显示文摘Although several strategies(including grain refinement,texture adjustment,precipitation hardening,etc.)have been verified to effectively improve the mechanical properties of lightweight magnesium(Mg)alloys,considerable efforts are still needed to be made to comprehensively understand the potential mechanisms controlling complex microstructures and deformation behaviors exhibited by the hexagonal close-packed host lattice of Mg,thus assisting the rational design of materials at a more physical level.As the cornerstone of this review,a universal rule,the so-called synergy of thermodynamics and kinetics(i.e.,thermo-kinetic diversity,correlation and connectivity),including a recently proposed theory of generalized stability(GS),is introduced to deepen our understanding on common behaviors in Mg alloys(i.e.,deformations(slip and twining modes),phase transformations(especially for precipitations)and interactions in between)at a new perspective.Guided by the GS theory,typical cases for Mg alloys design are qualitatively evaluated to reemphasize the traditional strengthening and toughening strategies mentioned above and to illuminate their exquisite coordination for breaking through the trade-off relationship between strength and ductility,corresponding to a typical thermo-kinetic pair(i.e.,high driving force(ΔG)-high GS).To produce the Mg alloys with superior strength-ductility balances,the potential capacity of this GS theory for guiding processing path design is discussed,finally。 | Tianle Wang Feng Liu | 2022 | Journal of Magnesium and Alloys2022，10，2： | 1 |
| 3 | Improved mechanical properties of V-microalloyed dual phase steel by enhancing martensite deformability显示文摘A good combination of ultimate tensile strength(UTS)up to 1365 MPa and total strain to failure(StF)to 15.5%has been achieved due to deformable martensite in the invented vanadium-microalloyed dual-phase(DP)steel,which was manufactured by two-stage annealing of cold rolled steel strip.The employed extensive characterizations revealed that the ductile martensitic phase in this DP steel differentiated from ordinarily low-carbon martensitic lath in both morphology and lattice structure.Complex coherent orientation relationships between ferrite,reverse austenite,martensitic phase and vanadium carbide(VC)do exist,leading to a new martensitic transformation mechanism and resultant dual-phase microstructure.Besides,a detailed characterization including essential phase transformation analysis in combination with in situ TEM observation,shows that,all the essential processing including recrystallization,reverse austenitic and martensitic transformation,in debt to the particular effects of VC,can be recognized as phase transformations with higher thermodynamic driving force and higher kinetic energy barrier as compared to previously common processing,which actually changes the microstructure and,indirectly leads to higher strength and higher ductility.This synergy of thermodynamics and kinetics can be generalized to improve mechanical properties of present steels. | Jingbin Zhang Yinrui Sun Zhijie Ji Haiwen Luo Feng Liu | 2021 | Journal of Materials Science & Technology2021，，16： | 1 |
| 4 | 基于稳定性的第三代先进高强钢设计显示文摘第三代先进高强钢(TG-AHSS)是近年来材料科学与汽车工业领域的研究热点。本文针对TG-AHSS的成分设计、热处理工艺及强韧化机制,基于热力学稳定性阐明了第三代先进高强钢成分设计的宗旨,基于广义稳定性对几类代表性热处理工艺进行了诠释。在此基础上,从广义稳定性与热-动力学相关性形成的热-动力学贯通性入手,对第三代先进高强钢的强韧化机制进行了总结和归纳。从热-动力学角度,对第三代先进高强钢的设计策略进行了展望。 | 张宇 吴盼 贾东昇 黄林科 贾晓晴 刘峰 | 2024 | 金属学报2024，60，2： | 0 |
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