材料期刊网，材料期刊，材料类期刊，材料期刊投稿

SURFACE COMPOSITE GEAR AND PIPE MADE BY SEPARATED EUTECTIC TECHNOLOGY

Z.Q. Cao , L. Y Piao , X.G. Zhang , Z. Li and J.Z. jin(Research Center of Foundry Engineering , Dalian University of Technology , Dalian 116024 , China)

金属学报(英文版)

It is found that the anomalous eutectics can be separated on macroscopic scale by flow caused by electromagnetic stirring, and the separated phase is the leading faceted phase with the solution entmpy over 23J/(mol.K). By using this technology, a new kind of composite ...

关键词: composite pipe or gear , null , null , null

First Cycle Effect of Polycrystalline CuZnAl Shape Memory Alloy during Thermal-Mechanical Cycling

Wenge LIU+ , Min ZHU , Dazhi YANG , Dept. of Materials Engineering , Dalian University of Technology , Dalian , 116024 , ChinaZhongguang WANG , State Key Laboratory for Fatigue and Fracture of Materials , Institute of Metal Research , Academia Sinica , Shenyang , 11001

材料科学技术（英文）

The thermal-mechanical (T-M) cycles at constant strain of a polycrystalline CuZnAl alloy have been studied in the. present work. In-situ optical microscopic observations have been made to reveal the features of the phase transitions during T-M cycling. The variation of stress-temperature (S-T) curve...

关键词: CuZnAl shape memory alloy , null , null

CALCULATION OF 3-D TRANSIENT TEMPERATURE FIELD DURING LASER TRANSFORMATION HARDENING PROCESS

L. W Zhang , R.S. Wang , J. Th.M.De Hosson , Y.L. Xia and F. G. Wang 1) The State Key Lab. for Materials Modification by Laser , Ion and Electron Beams , Dalian University of Technology , Dalian 116023 , China 2) Department of Applied Physics , University of Groningen , The Netherlands

金属学报(英文版)

A three-dimensional transient heat transfer model for laser transformation hardening process has been developed in this paper. The finite size of the laser treated sample, the surface heat loss of the sample, the latent heat of phase transformation and the temperature dependence of thermal properti...

关键词: temperature field , null , null

SUPERPLASTICITY OF A Ni-28.5Al-20.4Fe INTERMETALLIC ALLOY

W. L. Zhou , J. T. Guo , R.S. Chen and J. Y Zhou(Institute of Metal Research , The Chinese Academy of Sciences , Shenyang 110015 , China)(Department of Materials Engineering , Dalian University of Technology , Dalian 116024 , China)

金属学报(英文版)

Our previous investigation examines the soperplastic behavior of an extruded Ni-28.5Al-20.IFe alloy. Its tensile properties were determined at temperature from 1123Kto 1323K and initial strain rates from 1.0{x 10-2s-1 to 1.04x 10-4s-1. A maximumelongation of 233K was obtained at 1123K and a strain r...

关键词: Ni-Al-Fe intermetallics , null

CALCULATION OF RESIDUAL STRESS FIELD IN LASER TRANSFORMATION HARDENED MoCu NODULAR IRON

L. W. Zhang , J. Th.M.De Hosson , Y.L. Xia and F. G. Wang 1)The State Key Lab. for Materials Modification by Laser , Ion and Beams , Dalian University of Technology , Dalian 116023 , China 2)Department of Applied Physics , University of Froningen , The Netherlands

金属学报(英文版)

In this paper,a thermal elastic-plastic 2-D finite element model of stress generation during laser transformation hardening process was developed. In this model, the mechanical properties of the material, Young's modules E, Poisson's ratio v, yield limit s, and thermal expansion coefficient α, are ...

关键词: laser , null , null , null , null

SYNTHESIS OF NANO-METER TiAl INTERMETALLIC COMPOUND THROUGH MECHANICAL ALLOYING

M.Qi , L.S.Cui and D.Z.Yang(D Engineering , Dalian University of Technology , Dalian 116024 , China Manuscript received 26 August 1996)

金属学报(英文版)

The transformation process of mixture of elemental Al and Ti powders during mechanical alloying was investigated.Results show that Al-Ti amorphous phase and then TiAl intermetallic compound form.The TiAl intermetallic compound produced by mechanical alloying is nanocrystalline with disordered struct...

关键词: :TiAl intermetallic , null

Positron Annihilation Study of the Quenched-in Vacancies in CuZnAl Alloys

Zhongguo WEI and Dazhi YANG (Dept. of Materials Engineering , Dalian University of Technology , Dalian , 116024 , China)

材料科学技术（英文）

The excess vacancies in ternary CuZnAl and Ti-doped CuZnAl alloys quenched from temperatures between 673 K and 1223 K, and the behaviour of the quenched-in vacancies on postquench aging in martensite phase have been studied by Doppler broadening measurements. It has been found that adding Ti to the ...

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