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Yali TANG , Ningfu SHEN and Xin YUAN (Research Center for Materials , Zhengzhou Institute of Technology , Zhengzhou , 450002 , China)Zhiping LUO and Shaoqing ZHANG (Institute of Aeronautical Materials , Beijing , 100095 , China)(To whom correspondence should be ad
材料科学技术（英文）
An icosahedral phase in as-cast Mg 5. 78Zn-0.89Y-0.48Zr (wt-%) alloy has been identified with transmission electron microscope (TPM) The selected area diffraction patterns (SADP) from the phase show a five-fold symmetry of a quasicrystalline structure. The energy dispersive X-ray spectra (EDXS) ind...
关键词:
JIAO Chengge YAO Zhongkai HAN Yafang Beijing Institute of Aeronautical Materials , Beijing , 100095 , ChinaHarbin Institute of Technology , Harbin , 150006 , China
The interface orientation relationships between SiC whiskers and matrix have been studied by X-ray diffraction and crystallite orientation distri- bution functions (CODFs) analysis.The distribu- tion of SiC whiskers in Al matrix of the as-cast SiC_w/Al composite was nearly unperfect isotropic. Both ...
关键词: texture , null , null
ZHANG Shaoqing PAN Feng Institute of Aeronautical Materials , Beijing , 100095 , China.
This paper presents the results of an investiga- tion of the effect of hydrogen treatment on microstructures and tensile and low cycle fatigue properties of a Ti-6Al-4V cast alloy.The phase transformation and the refining mechanism of the cast microstructure during the process of hydrogen treatment ...
关键词: Ti-6Al-4V , null , null , null , null , null
GUO Chaoqi YANG Bingguang MA Jiming ** Institute of Aeronautical Materials , Beijing , 100095 , China+ To whom correspondence should be addressed
关键词: Ti_3Al intermetallic compound , null
Shenglong DAI Guifu YU Minggao YAN Institute of Aeronautical Materials , Beijing , 100095 , China
An effective dispersion-strengthening phase in Al-8Fe-2Mo-2Zr-2Nd-0.7Ti-1.6Si alloy was identified to be an aged precipitate phase with possible chemical stoichiometry of Al_(20)(Ti,Mo)_2 Nd and fcc crystal structure with a_o=1.455 nm.The structure was determined to be Fm3m space group....
关键词: high temperature Al alloy , null , null
LIU Yuesheng ZHAO Xianguo LIU Zhizhong XIE Xishan Beijing Institute of Aeronautical Materials , 100095 , China. University of Science and Technology Beijing , 100083 , China.To whom correspondence should be addressed.
On the basis of an investigation on σ phase in Ni-base cast superalloy K24 and the results about σ phase in other Ni-base superalloys,an embrittl- ing mechanism and a softening mechanism,by which platelike σ phase weakens the Ni-base superalloys,have been proposed.It is considered that the platelike...
关键词: Ni-base superalloys , null , null
A modified nucleation and competitive growth kinetic theory considering unsteady nucleation and effect of composition in dilute binary alloys was suggested,based on which the selections of δ.δ' and α phases in undercooled Al-Li melts were summarized by both isothermal and continuous cool- ing treatm...
关键词: undercooling , null , null
By WANG Shuncai LI Chunzhi GAO Yang CAO Chunxiao YAN Minggao Institute of Aeronautical Materials , Beijing , 100095 , China.To whom correspondence should be addressed.
The phase transformation and deformation mechanism of the alloy based on composition Ti_3Al with addition of Nb,V,Mo have been studied by use of transmission electron microscopy (TEM).It has been shown that the orientation relationship of α_2 phase transformed from β phase is:(0001)α_2// (l10)β,[121...
关键词: Ti_3Al-base alloy , null , null
CHEN Rongzhang WANG Luobao WANG Yuping ** Institute of Aeronautical Materials , Beijing , 100095 , China+ To whom correspondence should be addressed
Alloy DZ22 possesses rather high intermediate and elevated temperature mechanical properties comparable with the advanced commercial DS al- loy PWA1422.The alloy composition is based on PWA1422 alloy,only the content ranges of Hf,C and Zr are changed for systematic study.The pres- ent melting techno...
关键词: directional solidification , null , null , null
