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Journal of Wuhan University of Technology(Materials Science) 2015年第2期30卷 386-391页

作者：李大赵 wei yinghui SONG Jinlu HOU Lifeng School of Materials Scinece and Engineering North University of China School of Materials Scinece and Engineering Taiyuan university of technology

TWIP steels with 70% cold-rolled reduction were heated at 500, 600, 700, 800, 900, 1000, and 1100 ℃. Then, the properties before and after heating were examined through tensile and hardness experiments. The microstructures were also analyzed by optical microscopy and transmission electron microscopy. The relationship between the properties and microstructure was examined as well. Finally, the evolution process of cold-rolled microstructures during heating was discussed in detail. Moreover, some conclusions can be drawn, and the heating evolution characteristics are described.

关键词： TWIP steel cold rolled static recrystallization dislocation walls

A　THERMODYNAMIC　INVESTIGATION　ON　SPINODAL　DECOMPOSITION　BOUNDARY　IN　Cu－Ti　ALLOYS

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中国有色金属学会会刊：英文版 1996年第3期6卷 127-130页

作者： wei yinghui Wang Xiaotian(Institute of Materials Science and EngineeringXi’ an Jiaotong University,Xi’ an 710049) XIAN JIAOTONG UNIV INST MAT SCI & ENGNXIAN 710049PEOPLES R CHINA

ＡＴＨＥＲＭＯＤＹＮＡＭＩＣＩＮＶＥＳＴＩＧＡＴＩＯＮＯＮＳＰＩＮＯＤＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＢＯＵＮＤＡＲＹＩＮＣｕ－ＴｉＡＬＬＯＹＳ￥ＷｅｉＹｉｎｇｈｕｉ；ＷａｎｇＸｉａｏｔｉａｎ（ＩｎｓｔｉｔｕｔｅｏｆＭ... 详细信息

ＡＴＨＥＲＭＯＤＹＮＡＭＩＣＩＮＶＥＳＴＩＧＡＴＩＯＮＯＮＳＰＩＮＯＤＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＢＯＵＮＤＡＲＹＩＮＣｕ－ＴｉＡＬＬＯＹＳ￥ＷｅｉＹｉｎｇｈｕｉ；ＷａｎｇＸｉａｏｔｉａｎ（ＩｎｓｔｉｔｕｔｅｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎ...

关键词： Cu-Ti alloy spinodal decomposition thermodynamics

Effect of Heat-treatment on the Microstructures and Mechanical Properties of Mg-10Zn-5Al-0.1Sb-xCu Magnesium Alloy

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Journal of Wuhan University of Technology(Materials Science) 2013年第4期28卷 834-839页

作者：游志勇 ZHANG Yuhua CHENG weili ZHANG Jinshan wei yinghui College of Materials Science and Engineering Taiyuan University of Technology

The effects of the solution and aging treatment on microstructures and mechanical properties of the Mg-10Zn-5A1-0.1Sb-XCu cast magnesium alloys were investigated by brinell hardness measurement, scanning electron microscopy （SEM）, energy spectrum analyzing apparatus and X-ray diffraction （XRD）. The experimental results show that the strip-like t-Mg32 （A1, Zn）49 phase is shown at the grain boundaries and Mg2Cu phase become smaller, even granular after solution treatment at 350 ~C for 24 h. By ageing treatment at 180 ~C, the ternary strengthening phase （r phase） precipitates gradually at or around grain boundary. With increasing aging time, the micro-hardness improves obviously and up to the maximum （105.9 HV） at aging time of 36 h. In addition, the tensile-strengths at room temperature and at an elevated temperature respectively reach 228 MPa and 176 MPa, which is increased by 20% and 10%, respectively.

关键词： solution and aging magnesium alloy microstructure mechanical property

Microstructure and Properties of SiC/Gr Composite Reinforced Aluminum Matrix Composites Material

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Journal of Wuhan University of Technology(Materials Science) 2018年第1期33卷 171-176页

作者：游志勇 WANG Zhuo wei yinghui CAI Laiqiang ZHANG Jinshan College of Materials Science and Engineering Taiyuan University of Technology College of Materials Science and Engineering Shanghai Jiao Tong University

SiC/Gr/ZL101 aluminum-based composites were prepared by semi-solid stirring and gravity pouring method. The effects of SiC/Gr with different volume fractions on the microstructure and property of aluminum-based composites were studied by means of microstructure observation, tensile test, fracture scanning analysis and damping capacity test. The results show that the primary phase α-Al of ZL101 alloy prepared by semi-solid stirring and gravity pouring method is fragmented dendrite, along with the rising SiC volume fractions, the tensile strength of the composites first increases and then decreases while its elongation gradually decreases, the maximum tensile strength of the material can reach 168 MPa, up to 16% than that of ZL101 alloy, the fracture morphology is obviously brittle fracture. They also show that the addition of SiC and Gr improves the damping capacity of ZL101 alloy, the internal dissipation Q^-1 of the composites is obviously higher than that of matrix alloy and gradually increases along with the rising SiC volume fractions. The damping mechanism of the composites is mainly the combined effects of both dislocation damping and interfacial damping.

关键词： SiC ZL101 mechanical property wear resistance damping property

Effect of Ce-rich rare earth on microstructure and mechanical properties of Mg-10Zn-5Al-0.1Sb magnesium alloy

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China Foundry 2012年第2期9卷 131-135页

作者： You Zhiyong Zhang Zhaoguang Zhang Jinshan wei yinghui College of Materials Science and Engineering Taiyuan Universioof TechnologyTaivuan Shanxi 030024China

To improve the comprehensive mechanical properties of Mg-10Zn-5Al-0.1Sb magnesium alloy, different amount of Ce-rich rare earth （RE） was added to the alloy, and the effect of RE addition on the microstructure and mechanical properties of Mg-10Zn-5Al-0.1Sb alloy was investigated by means of Brinell hardness measurement, scanning electron microscopy （SEM）, energy dispersive spectroscope （EDS） and X-ray diffraction （XRD）. The results show that an appropriate amount of Ce-rich rare earth addition can make the AI4Ce phase particles and CeSb phase disperse more evenly in the alloy. These phases refine the alloy＇s matrix and make the secondary phases [τ-Mg32（AI,Zn）49 phase and φ-Al2MgsZn2 phase] finer and more dispersive, therefore significantly improve the mechanical properties of the Mg-10Zn-5AI-0,1Sb alloy. When the RE addition is 1.0 wt.%, the tensile strengths of the alloy both at room temperature and 150℃ reach the maximum values while the impact toughness is slightly lower than that of the matrix alloy. The hardness increases with the increase of RE addition.

关键词： ZA105 microstructure mechanical properties Ce-rich rare earth Ce4Al

SIDEBANDS OF X-RAY DIFFRACTION IN AGE-HARDENED Cu-Ti ALLOY

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中国有色金属学会会刊：英文版 1996年第4期6卷 87-93页

作者： wei yinghui Wang Xiaotian(School of Materials Science and Engineering,Xi’an Jiaotong University,Xi’an 710049) XIAN JIAOTONG UNIV SCH MAT SCI & ENGNXIAN 710049PEOPLES R CHINA

ＳＩＤＥＢＡＮＤＳＯＦＸ－ＲＡＹＤＩＦＦＲＡＣＴＩＯＮＩＮＡＧＥ－ＨＡＲＤＥＮＥＤＣｕ－ＴｉＡＬＬＯＹ￥ＷｅｉＹｉｎｇｈｕｉ；ＷａｎｇＸｉａｏｔｉａｎ（ＳｃｈｏｏｌｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎ... 详细信息

ＳＩＤＥＢＡＮＤＳＯＦＸ－ＲＡＹＤＩＦＦＲＡＣＴＩＯＮＩＮＡＧＥ－ＨＡＲＤＥＮＥＤＣｕ－ＴｉＡＬＬＯＹ￥ＷｅｉＹｉｎｇｈｕｉ；ＷａｎｇＸｉａｏｔｉａｎ（ＳｃｈｏｏｌｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅｒｉｎｇ，Ｘｉ＇ａｎＪｉａｏｔ...

关键词： Cu-Ti alloy X-ray diffraction sidebands static lattice wave theory

Effect of Cu addition on microstructure and properties of Mg-10Zn-5Al-0.1Sb high zinc magnesium alloy

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China Foundry 2012年第1期9卷 43-47页

作者： You Zhiyong Zhang Yuhua Cheng weili Zhang Jinshan wei yinghui College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina

To improve the strength, hardness and heat resistance of Mg-Zn based alloys, the effects of Cu addition on the as-cast microstructure and mechanical properties of Mg-10Zn-5Al-0.1Sb high zinc magnesium alloy were investigated by means of Brinell hardness measurement, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, XRD and tensile tests at room and elevated temperatures. The results show that the microstructure of as-cast Mg-10Zn-5AI-0.1Sb alloy is composed of α-Mg, τ-Mg32（Al, Zn）49, Ф-Al2MgsZn2 and Mg3Sb2 phases. The morphologies of these phases in the Cu-containing alloys change from semi-continuous long strip to black herringbone as well as particle-like shapes with increasing Cu content. When the addition of Cu is over 1.0wt.%, the formation of a new thermally-stable Mg2Cu phase can be observed. The Brinell hardness, room temperature and elevated temperature strengths firstly increase and then decrease as the Cu content increases. Among the Cucontaining alloys, the alloy with the addition of 2.0wt.% Cu exhibits the optimum mechanical properties. Its hardness and strengths at room and elevated temperatures are 79.35 HB, 190 MPa and 160 MPa, which are increased by 9.65%, 21.1% and 14.3%, respectively compared with those of the Cu-free one. After T6 heat treatment, the strengths at room and elevated temperatures are improved by 20% and 10%, respectively compared with those of the ascast alloy. This research results provide a new way for strengthening of magnesium alloys at room and elevated temperatures, and a method of producing thermally-stable Mg-10Zn-5Al based high zinc magnesium alloys.

关键词： microstructure mechanical properties high zinc magnesium alloy Mg2Cu phase

Influence of Surface Nanocrystallization on Ti Ion Implantation of Pure Iron

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Journal of Materials Science & Technology 2015年第3期31卷 305-310页

作者： Xu Li Yanli An yinghui wei Huayun Du Lifeng Hou Chunli Guo Hongbo Qu Yide Wang College of Materials Science and Engineering Taiyuan University of Technology College of Base Medicine Shanxi Medical University Lüliang University Taiyuan Iron & Steel (Group) CO. LTD.

In order to increase the depth or concentration of Ti ion implantation of pure iron, the surface mechanical attrition treatment(SMAT), which can fabricate a nanometer-grained surface layer without porosity and contamination in a pure iron plate, was used before ion implantation. Ti ion was implanted into the SMA treated sample and coarse-grained counterpart by using a metal vapor vacuum arc source implanter. The changing of depth and concentration of Ti was studied in a function of implantation *** optical microscopy, transmission electron microscopy and X-ray diffraction, the grain size of the nano structured surface was studied. Micro-hardness, friction and wear behavior of nano surface layers were studied. By energy dispersive X-ray spectroscopy and Auger electron spectroscopy, the chemical composition and concentration of Ti ion in the surface implantation layer were studied. Experimental results showed that the concentration of Ti increased dramatically compared with untreated coarsegrained samples, which is attributed to the existence of higher density of defects(supersaturated vacancies, dislocations, non-equilibrium grain boundaries etc.) and compression stress field in the SMA treated nanocrystallined surface layer. The interaction between the defects and the implanted solute atoms leads to the increment of solid solubility. But the implantation depth showed inconspicuous change. It is shown that the ion range is just relevant to the energy and mass of the ion, dose of injection,the mass and density of target material.

关键词： Pure iron Surface mechanical attrition treatment I

ON SPINODAL BOUNDARIES OF Al-Li ALLOYS

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Acta Metallurgica Sinica(English Letters) 1995年第1期8卷 41-46页

作者： wei yinghui WANG Xiaotian (School of Materials Scince and Engineering Xi’an Jiaotong University Xi’an 710049 China ) Xi'an Jiaotong Univ Xi'an China

The spinodal decomposition can occur in Al-Li alloys containing 5.8-14.2 at.% Li at room temperature. The modutated structure wavelength is approximately 3.1 nm for com mercial Al-LI alloys. The limit composition of t... 详细信息

关键词： Al-Li alloy spinodal decomposition regular solution

Study on aging phase transformation process in Ni42 CrTiAl alloys

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电子显微学报 2001年第4期20卷 342-343页

作者： Hou Li-feng wei yinghui Hu lanqing Xu Bingshe 太原工业大学山西太原 030024

As one of the precise alloys ,constant elastic alloy is of great importance due to stability of elastic modulus and inherent frquency in a definite range of ***,the elastic modulus of common metals or alloys drops wit... 详细信息

关键词： Study on aging phase transformation process in Ni