LIU Ning CUI Kun Huazhong University of Science and Technology
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Wuhan.China DENG Zonggang Hefei University of Technology
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Hefei
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China CHENG Benpei KONG Jie Institute of Solid State Physics
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Academia Sinica
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Hefei
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China Doctorate student
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Department of Mechanical Engineering No.2
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Huazhong University of Science and Technology
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Wuhan 430074
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China
金属学报(英文版)
Microstructure of the deepest zone of high speed steel W6Mo5Cr4V2(M2)melt after laser fu-sion was found to be so fine as the ehill zone of a solidified ingot.When narrower chill zoneformed,the long columnar dendrites grow into the melt and then the fine equiaxed cellularstructure appears in upper me...
关键词:
High speed steel W6Mo5Cr4V2(M2)
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XIA Yuebo ZHANG Tianyi State Key Laboratory for Fatigue and Fracture of Materials
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Institute of Metal Research
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Academia Sinica
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Shenyang
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ChinaFEI Guangtao ZHOU Xing Laboratory of Internal Friction and Defects in Solids
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Institute of Solid State Physics
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Academia Sinica
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Hefei
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China Associate Professor
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Institute of Metal Research
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Academia Sinica
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Shenyang 110015
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China
金属学报(英文版)
The variation of cyclic stress,internal friction and ultrasonic attenuation during cyclic deformation and relations among them have been investigated with different slip orientation Al single crystals.The results indicate that the value of cyclic stress σ,internal friction Q~(-1)and ultrasonic atten...
关键词:
crystal orientation
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YI Huchun GE Tingsui (T.S.Ke) Institute of Solid State Physics
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Academia Sinica
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Hefei
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China GE Tingsui
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Professor
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Laboratory of Internal Friction and Defects in Solids
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Institute of Solid State Physics
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Academia Sinica
,
Hefei
,
China
金属学报(英文版)
Internal friction and elastic modulus of ternary Mn-Cu-Al alloys containing 56—60 wt-% Mn,0-3.59 wt-% Al were measured with acoustic frequency,1 kHz,in the tempera- ture range of-150 to 150℃.It was found that when the specimen was aged in the temperature range under the spinodal curve within the mis...
关键词:
internal friction
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DU Jiaju TONG Shihua Institute of Solid State Physics
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Academia Sinica
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Hefei
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China [Originally published in ACTA METALL SIN(CHINESE EDN)25(3)1989 pp A226—A228
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Associate Professor
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Institute of Solid State Physics
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Academia Sinica
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Hefei
,
China
金属学报(英文版)
Optical microscope,SEM and IMMA investigation show that a strong interaction between hydrogen and calcium aluminate inclusions containing MgO may occur in medium carbon steels.This causes the hydrogen accumulating around the inclusions and reducing the ductility of the steel....
关键词:
hydrogen
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ZHU Xianfang ZHANG Lide Institute of Solid State Physics
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Academia Sinica
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Hefei
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China Research Assistant
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Institute of Solid State Physics
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Academia Sinica
,
Hefei
,
China
金属学报(英文版)
The characteristics of the low frequency internal friction and the modulus effect associated with the non-equilibrium spinodal pretransformation and the following discontinuous trans- formation was investigated in an as-quenched eutectiod Al-Zn alloy.It was observed that the loss of the stability in...
关键词:
spinodal pretransformation
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CHENG bolin GE Tingsui (T.S.Ke) Laboratory of Internal Friction and Defects in Solids
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Institute of Solid State Physics
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Academia Sinica
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Hefei
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China Professor Laboratory of Internal Friction and Defects in Solids
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Institute of Solid State Physics
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Academia Sinica
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Hefei
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230031
金属学报(英文版)
Internal friction and micro-creep measurements were performed with high-purity aluminium bamboo-crystal specimens.The relaxation strength was found to decrease with the decrease of temperature and became zero at about 0.4 T_m(T_m is the melting temperature).This re- flects the occurrence of local di...
关键词:
Grain boundary disordering
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YU Xuejie WANG Jianlin Shanghai Iron and Steel Research Institute
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Shanghai
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ChinaZHOU Tianjian Anhui Institute of Technology
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Hefei
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China YU Xuejie
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Senior Engineer
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Shanghai Iron Steel Research Institute
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1001 Taihe Road
,
Wusong
,
Shanghai
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China.
金属学报(英文版)
In order to clarify that the IFP and the “Type 2”α phase are also arising from TiC,a metastable β-Ti alloy was selected for investigation in this work.The results showed that af- ter heating the alloy just below the α+β→β transus temperature and quenching,the TiC lay- er existed at the α/β interface...
关键词:
interface phase(IFP)
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LIU Senying GAO Zhe LI Keng University of Science and Technology Beijing
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ChinaLI Junqing China University of Science and Technology
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Hefei
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ChinaWANG Congyu Central Iron and Steel Research Institute
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Ministry of Metallurgical Industry
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Beijing
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China Doctoral student
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Postgraduate School
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Cemral Iron and Steel Research Institute.Ministry of Metallurgical Industry
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Beijing
,
China
金属学报(英文版)
Based on the feature of crystal sites occupied by alloying elements,a model cluster,investi- gating the interaction mechanisms of nonmagnetic element Cu in RECo_5 type alloy,has been presented.The electronic structure has been calculated with SCF-X_a-SW method.The calcu- lating results show that,aft...
关键词:
intermetallic compound
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WANG Weihua XIAO Keqin CHU Zhaoqin DONG Yuanda Institute of Solid State Physics
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Academia Sinica
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Hefei
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ChinaWANG Genmiao Centre of Structural Analysis
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China University of Science and Technology
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Hefei
,
China
金属学报(英文版)
Amorphous Al_(80)Fe_(20) powder which can hardly be obtained using conventional rapid quenching technique was directly prepared from crystalline Fe and A1 powders by means of mechanical alloying process.The amorphization process was examined by X-ray analysis and Mssbauer spectroscopy,and the therma...
关键词:
mechanical alloying
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ZHU Kai University of Science and Technology of China
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Hefei
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China WANG Chongyu Central Iron and Steel Research Institute
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Ministry of Metallurgical Industry
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Beijing
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China Central Iron and Steel Research Institute
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No.13
,
Taipingzhuang
,
Beijing
,
China
金属学报(英文版)
The calculation of electronic structure of γ'-Ni_3Al phase with or without Mg and W by the Recursion and LCAO methods clarified that Mg and W atoms lose their outer electrons par- tially after they entered γ'-Ni_3Al.It causes the reduction of the radii of the atoms.So it is preferable for Mg atom to...
关键词:
superalloy
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