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HOT DEFORMATION AND MARTENSITIC TRANSFORMATION BEHAVIORS OF Fe-32%Ni ALLOY

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Acta Metallurgica Sinica(English Letters) 2006年第2期19卷 133-138页

作者： j. huang Z. Xu Cold Rolling Mill Baoshan Iron ＆ Steel Co. Ltd Shanghai 201900 China Key Laboratory for High Temperature Materials and Tests of Ministry of Education Shanghai Jiaotong University Shanghai 200030 China

The Hot deformation and martensitic transformation behaviors of Fe-32%Ni alloy was investigated by measurements of electrical resistance and X-ray diffraction. With the increase in strain, the austenite goes through from the work-hardened to the partial dynamcally re-crystallized and then to the completed dynamically re-crystallized. The martensitic transformation characteristics depend on the austenite states. The work-hardening in small strain is helpful to martensitic transformation due to the low dislocation density and little lattice distortion, while the high dislocation density and severe lattice distortion by the increase in strain will hinder the martensitic nucleation. Once dynamic re-crystallization （ DRX ） takes place, the martensitic transformation will be enhanced again, which is related to the heterogeneous dynamic substructures. The growing DRX grain can enhance the martensitic nucleation due to the low dislocation density near its grain boundary.

关键词： Fe-32%Ni alloy hot deformation work hardening dynamic re-crystallization martensitic transformation

THE　ALLOYING　BEHAVIOR　OF　BORON　AND　CARBON　INNi_3Al

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中国有色金属学会会刊：英文版 1997年第1期7卷 102-106页

作者： Zhang, Y huang, j Lin, DL SHANGHAI jIAO TONG UNIV SHANGHAI 200030PEOPLES R CHINA

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关键词： intermetallics Ni 3Al stoichiometry solid solution alloying lattice parameter

Thermal ablation of metastatic disease to the musculoskeletal system

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journal of Cancer Metastasis and Treatment 2023年第1期9卷 36-48页

作者： Erwin Xia Ambrose j.huang Department of Radiology Division of Musculoskeletal Imaging and InterventionMassachusetts General HospitalBostonMA 02114USA

A variety of indications have been published regarding the use of percutaneous thermal ablation for treating tumors of the musculoskeletal system,including bone and soft tissue lesions,benign and malignant lesions,and primary and metastatic *** the appropriately selected patient,the advantages of percutaneous thermal ablation include decreased morbidity,decreased cost,and shorter hospitalization stays compared to *** number of different thermal ablation modalities is increasing,and each modality has its advantages and *** directly comparing the effectiveness of the various thermal ablation modalities are sparse,however,so the choice of ablation modality often depends on availability,user preference,and local *** the list of uses for percutaneous thermal ablation is ever-expanding,in this article,we will discuss the two most well-established indications,which are palliation of pain attributed to bone and soft tissue metastases and local control of oligometastatic *** clinical trials have shown percutaneous thermal ablation to be an effective method of palliating pain due to bone and soft tissue metastases and of achieving local control in the setting of oligometastatic disease with low rates of complication.

关键词： Musculoskeletal intervention radiofrequency ablation cryoablation image-guided metastatic disease

Decorating crystalline YFe_(2-x)Al_(x) on the Mg_(60)La_(10)Ni_(20)Cu_(10) amorphous alloy as “hydrogen pump” to realize fast de/hydrogenation

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journal of Materials Science & Technology 2024年第6期173卷 72-79页

作者： L.j.huang H.Wang L.Z.Ouyang M.Zhu H.j.Lin School of Materials Science and Engineering Key Laboratory of Advanced Energy Storage Materials of Guangdong ProvinceSouth China University of TechnologyGuangzhou 510641China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China

Mg-based amorphous alloys are one of the potential hydrogen storage materials but suffer from sluggish dehydrogenation/hydrogenation(de/hydrogenation)*** this work,as a new strategy,a hydrogen pump is built on the surface of amorphous alloys to solve this *** milling crystalline YFe_(2-x)Al_(x) hydrogen storage alloy with Mg_(60)La_(10)Ni_(20)Cu_(10) amorphous alloy,fine crystalline particles were seeded on amorphous alloy powder to form a“strawberry”*** to the TEM observation,a metallurgical bonding boundary formed between the Mg-based amorphous matrix and the Y-Fe-Al crystalline *** microstructure and de/hydrogenation kinetics investigation,the“hydrogen pump”effect of the seeded crystalline alloy was confirmed,which makes it much easier for the hydrogen to dissociate on and diffuse through the surface of the Mg-based amorphous *** such effect,the H absorption rate of Mg_(60)La_(10)Ni_(20)Cu_(10) amorphous alloy became almost eight times faster and it absorbs ~2.8 wt.% in 1 h at 130℃ under 4.5 MPa-H_(2).Further,fast hydrogenation can even achieve at 70℃ and the low-temperature dehydrogenation kinetics of the amorphous hydride can be also greatly *** present work proves that surface modification is of great importance for obtaining Mg-based amorphous alloy with ideal hydrogen storage performance.

关键词： Hydrogen storage Mg-based amorphous alloy Hydrogen pump Composite structure

TRANSFERMATRIXMETHODOFDAMPINGMULTIBODYSYSTEMSVIBRATION

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宇航学报 1996年第2期 29-36页

作者：Ｅ．ＳｔｅｉｎＹ．Ｊ．ＨｕａｎｇＵｎｉｖｅｒｓｉｔａｔＨａｎｎｏｖｅｒ

基于文献［１，２］建立的多体系统传递矩阵法，进一步阐述了处理含有各种阻尼的多体系统固有振动的传递矩阵法，讨论了系统对任意激励响应

关键词：刚体弹性体阻尼多体系统传递矩阵法

SCALING PROPERTIES OF INTERFACES IN CRYSTALS UNDER NONEQUILIBRIUM CONDITIONS

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Acta Metallurgica Sinica(English Letters) 1997年第5期10卷 415-418页

作者： Shi, D.W. huang, j.Y. Long, Q.W. Inst of Metal Research Chinese Acad of Sciences Shenyang China

An equation of Langevin type was proposed to describe the interface evolution in crystals under nonequilibrium conditions (such as in Cu-Fe or Cu-Co system upon ball milling). The scaling properties (H) of this equation is in good agreement with the Monte Carlo simulations described by Bellon and Averback. In this equation the volume diffusion and interface diffusion are all important and this is consistent with some experimental results.

关键词： Ball milling Binary alloys Crystals Mathematical models Nanostructured materials Surface roughness

NUMERICAL STUDY OF TURBULENT IMPINGING jET WITH A REFINED k-ε MODEL

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journal of Hydrodynamics 2000年第4期12卷 8-15页

作者： Xu, j.L. Xu, Z. huang, S.j. Zhang, K.Y. Xiao, M. 2nd Dep. Nanjing Univ. of Aeron. and Astron. Nanjing 210016 China

A refined k-Ε model re-considering the fluctuating pressure diffusion term in the dissipation rate equation (Ε-equation) is provided and used in the numerical study of circular semi-confined turbulent impinging jet. The results are compared with those of the standard k-Ε model and show that the predicting ability of the refined k-Ε model is much improved, especially for the turbulent kinetic energy k. So it is necessary to consider the effect of the fluctuating pressure diffusion term and to model this term correctly and exactly in the near wall region with the great adverse pressure gradient, where the effect of the pressure fluctuating is important. Therefore we can conclude that the new modeling idea expressed in this paper is correct and effective.

关键词： Computer simulation jets Mathematical models Turbulence

Hot Cracking in AZ31 and AZ61 Magnesium Alloy

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journal of Materials Science & Technology 2011年第7期27卷 633-640页

作者： C.j. huang C.M. Cheng C.P. Chou F.H. Chen Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 Taiwan China Department of Industrial Education National Taiwan Normal University Taipei 106 Taiwan China

This paper examined the impact of the number of thermal cycles and augmented strain on hot cracking in AZ31 and AZ61 magnesium alloy. Statistical analyses were performed. Following observation using a scanning electron microscope （SEM）, an energy dispersive spectrometer （EDS） was used for component analysis. Results showed that Al content in magnesium alloy has an effect on hot cracking susceptibility. In addition, the nonequilibrium solidification process produced segregation in Al content, causing higher liquid Mg-alloy rich Al content at grain boundaries, and resulting into liquefied grain boundaries of partially melted zone （PMZ）. In summary, under multiple thermal cycles AZ61 produced serious liquation cracking. AZ61 has higher （6 wt%） Al content and produced much liquefied Mg17Al12 at grain boundaries under multiple thermal cycles. The liquefied Mg17Al12 were pulled apart and hot cracks formed at weld metal HAZ due to the augmented strain. Since AZ31 had half the Al content of AZ61, its hot-cracking susceptibility was lower than AZ61. In addition, AZ61 showed longer total crack length （TCL） in one thermal cycle compared to that in three thermal cycles. This phenomenon was possibly due to high-temperature gasification of Al during the welding process, which resulted in lower overall Al content. Consequently, shorter hot cracks exhibited in three thermal cycles. It was found the Al content of AZ31 and AZ61 can be used to assess the hot-cracking susceptibility.

关键词： Varestraint test Thermal cycles Hot-cracking susceptibility Gas tungsten arc welding (GTAW) AZ31 AZ61

Investigation of Chemical Properties by NMR During the Laboratory Aging of Asphalt

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武汉理工大学学报 2010年第17期32卷 43-46页

作者： MA L X WU S P huang j F School of Transportation Wuhan University of TechnologyWuhan 430063China Key Laboratory of Silicate Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Communications Planning and Design Institute of Hubei Province Wuhan 430051China

In this work,the chemical properties of asphalt were evaluated during the laboratory aging. The rolling thin film oven (RTFO),termed as short-term aging,and pressurized aging vessel (PAV),termed as long-term aging. Tests were used to simulate the laboratory aging of this asphalt. The performance characteristics of asphalt depends the chemical composition of asphalt. NMR spectroscopy enables etailed information about the Carbon-and-hydrogen types of asphalt without separating it into different components. Carbon and proton NMR measurements of asphalt showed that isomerization was the main chemical reactions of hydrocarbon groups following aging. The Corbett fractionation procedure was used to separate fresh and aged asphalts into four generic fractions,namely; asphaltenes,aromatics,resins and saturates were applied to evaluate the chemical changes that occurred during the aging processes.

关键词： asphalt ageing chemical characteristics NMR