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Journal of Materials Science & Technology 2003年第6期19卷 557-560页

作者： Q.WANG J.J.Blandin M.Suery B.Van de Moortele J.M.pelletier GPM2 ENSPG D.U. B.P.46 38042 Grenoble France Institute of Materials Shanghai University Shanghai 200072 ChinaGPM2 ENSPG D.U. B.P.46 38042 Grenoble FranceGPM2 ENSPG D.U. B.P.46 38042 Grenoble FranceGEMPPM Bat. B. PascalINSA 69621 Villeurbanne Cedex FranceGEMPPM Bat. B. PascalINSA 69621 Villeurbanne Cedex France

The homogeneous plastic flow of fully amorphous and partially crystallized Zr(41.2)Ti(13.8)Cu(12.5)Ni(10)Be(22.5) bulk metallic glass (Vitl) has been investigated by compression tests at high temperatures in supercooled liquid region. Experimental results show that at sufficiently low strain rates, the supercooled liquid of the fully amorphous alloy reveals Newtonian flow with a linear relationship between the flow stress and strain rate. As the strain rate is increased, a transition from linear Newtonian to nonlinear flow is detected, which can be explained by the transition state theory. Over the entire strain rate interval investigated, however, only nonlinear flow is present in the partially crystallized alloy, and the flow stress for each strain rate is much higher. It is found that the strain rate-stress relationship for the partially crystaltized alloy at the given temperature of 646 K also obeys the sinh law derived from the transition state theory, similar to that of the initial homogeneous amorphous alloy. Thus, it is proposed that the flow behavior of the nanocrystalline/amorphous composite at 646 K is mainly controlled by the viscous flow of the remaining supercooled liquid.

关键词： Homogeneous plastic flow Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous alloy,Partially crystallized amorphous alloy

Isochronal and isothermal crystallization in Zr_(55)Cu_(30)Ni_5Al_(10) bulk metallic glass

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Transactions of Nonferrous Metals Society of China 2012年第3期22卷 577-584页

作者： J.C.QIAO J.M.pelletier Université de Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonF-69621 Villeurbanne cedexFrance

Non-isothermal crystallization transformation kinetics and isothermal crystallization kinetics in super-cooled liquid region（SLR） in Zr55Cu30Ni5Al10 bulk metallic glasses were studied by differential scanning calorimetry（DSC） and X-ray diffraction（XRD）.In isochronal mode,the average values of activation energy in Zr55Cu30Ni5Al10 bulk metallic glass determined by different models（Kissinger method,Flynn-Wall-Ozawa method and Augis-Bennett method） are in good agreement with each *** addition,the isothermal transformation kinetics in Zr55Cu30Ni5Al10 bulk metallic glasses was described by the Johnson-Mehl-Avrami（JMA） *** Zr55Cu30Ni5Al10 bulk metallic glass,the Avrami exponent n ranges from 2.2 to 2.9,indicating that crystallization mechanism in the bulk metallic glass was mainly diffusion-controlled;crystal growth is controlled by long range ordering diffusion in three-dimensional growth during isothermal crystallization *** average value of activation energy in Zr55Cu30Ni5Al10 bulk metallic glass is 469 kJ/mol in isothermal transformation process.

关键词： Zr55Cu30Ni5Al10 metallic glass thermal analysis crystallization kinetics Avrami exponent

Highlights of the 2017 Atlantic Biorefinery Conference

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Journal of Bioresources and Bioproducts 2017年第3期2卷 95-99页

作者： André pelletier New Brunswick Innovation Foundation 440 King StreetFrederictonNBCanadaE3B 5H8

The 2017 Atlantic Biorefinery Conference was held over three days from June 7th to 9th,at the Hugh john Flemming Forestry Centre in Fredericton,*** goals of the conference mirror the goals of BioNB:to promote and foster the biotech sector in New Brunswick and the Maritimes in *** format has been consistent for at least the last three years(years attended by the author of this report).The first day,conference attendees were divided into self-selected groups(indicated when registering)for technology demonstration *** following two days featured talks on technology,research,project proponents,and policy development,all in support of the *** speaker sessions were all in *** were complimented by tradeshow booths,networking events,and facilitated business-to-business meetings,as well as a poster session for which a prize was awarded for the best student poster.

关键词： Atlantic Canada Biorefinery Conference Fredericton Forestry Centre

Influence of high configuration entropy on damping behaviors of Ti-Zr-Hf-Ni-Co-Cu high entropy alloys

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Journal of Materials Science & Technology 2023年第22期153卷 242-253页

作者： W.Q.Wu L.Zhang K.K.Song J.M.pelletier H.F.Zhang J.C.Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Mechanical and Electrical Engineering Shandong UniversityWeihai 264209China Universitéde Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonVilleurbanne Cedex F-69621France Chongqing Science and Technology Innovation Center of NPU Chongqing 401135China

TiNi-based shape memory alloys(SMAs)have been used as damping materials to eliminate noise and mechanical ***,their application is limited by low working temperatures and damping *** this work,two novel Ti-Zr-Hf-Ni-Co-Cu high entropy shape memory alloys(HESMAs)with different transformation temperatures and damping properties were *** results show that Ti_(25)Zr_(8)Hf_(17)Ni_(30)Co_(5)Cu_(15) has superior damping performance arising from martensitic transformation,shape memory effect(thermal cycle at constant load)as well as *** to traditional TiNi-based SMAs,the as-cast HESMAs exhibit a much higher ultrahigh yield strength(∼2 GPa)and storage modulus(∼50 GPa).The high configuration entropy of the HESMAs with high uneven internal stress and severe lattice distortion is revealed as the underlying mechanisms governing distinctive damping *** effects of high configuration entropy and microheterogeneity on the martensitic transforma-tion behavior and damping performance of HESMAs are clarified in this work,which provides a basis for designing alloys with superior damping properties.

关键词： High entropy s hape memory alloy Internal friction Damping Configuration entropy Martensitic transformation

Mechanical Relaxation of a Ti36.2Zr30.3Cu8.3Fe4Be21.2 Bulk Metallic Glass: Experiments and Theoretical Analysis

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Acta Metallurgica Sinica(English Letters) 2019年第6期32卷 726-732页

作者： J.C.Qiao Y.H.Chen G.J.Lyu K.K.Song J.M.pelletier Y.Yao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China School of Mechanical Electrical and Information EngineeringShandong University(Weihai)Weihai 264209China MATEIS UMR CNRS5510Bat.B.PascalINSA-LyonUniversite de Lyon69621 Villeurbanne CedexFrance

The dynamic mechanical relaxation behavior of Ti36.2Zr30.3Cu8.3Fe4Be21.2 bulk metallic glass with good glass-forming ability was investigated by mechanical *** mechanical relaxation behavior was analyzed in the framework of quasi-point defects *** experimental results demonstrate that the atomic mobility of the metallic glass is closely associated with the correlation factorχ.The physical aging below the glass transition temperature T g shows a non-Debye relaxation behavior,which could be well described by stretched Kohlrausch exponential *** Kohlrausch exponentβaging reflects the dynamic heterogeneities of the metallic *** concentration of"defects"and atomic mobility decrease caused by the in situ successive heating during the mechanical spectroscopy experiments.

关键词： Metallic glasses Mechanical relaxation Physical aging Quasi-point defects

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Ride the Indian

考试与评价（英语高一专刊） 2018年第9期 43-44,38页

作者： Andrew T. pelletier

Cultural Differences: An International Perspective on Early Childhood Education

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Frontiers of Education in China 2012年第1期7卷 1-4页

作者： Jing ZHANG Janette pelletier School of Education Buffalo State CollegeBuffaloNY 14221USA Dr.Eric Jackman Institute of Child Study University of TorontoTorontoON M5R 2X2Canada

Early childhood is a period of great potential for human growth and ***’s physical and psychological development is shaped by their experiences during the first years of *** early development can be summarized in terms of universal general principles,development pathways vary and are linked to individual capacities and economic,social and cultural *** example,many western experts are interested in emotional and self-regulatory factors,relating these factors to the developmental aims of early childhood *** eastern cultures place more value on academic achievement,preparing their children from their early ***,public and political interests and elaborate national policy frameworks in countries in the East have initiated a move to more universal and equitable provision of developmentally appropriate early childhood programs.

关键词： preparing summarized policy

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考试与评价（英语高一专刊） 2017年第9期 48-49,38页

作者： Andrew T.pelletier

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考试与评价（英语高一专刊） 2017年第5期 36-37页

作者： Andrew T.pelletier

Irrigation's effect and applied selection on the fiber quality of Ethyl MethaneSulfonate(EMS)treated upland cotton(Gossypium hirsutum L.)

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Journal of Cotton Research 2018年第4期1卷 1-11页

作者： WITT Travis W ULLOA Mauricio pelletier Mathew G. MENDU Venugopal RITCHIE Glen L. Plant and Soil Science Department Texas Tech University USDA-ARS PA CSRL Plant Stress and Germplasm Development Research USDA-ARS Cotton Production and Processing Research Laboratory

Background: Producing rainfed cotton(Gossypium hirsutum L.) with high fiber quality has been challenging in the Texas High Plains because of extended periods of insufficient rainfall during sensitive boll developmental *** variation created by Ethyl MethaneSulfonate(EMS) mutagen has successfully improved fiber quality of cotton. However, little is known about the effect of water deficit environments on fiber quality. Three EMS treated populations were advanced from the first to the fourth generation(M1 to M4) as bulk harvested populations. In2014, single-plant divergent selection was applied based on perceived morphological and agronomic differences seen during and at the end of the ***: Analyses from these selections in 2014-2016 showed significant(P< 0.05) improvement between and within populations for fiber traits(micronaire, length, strength, uniformity, and elongation) when compared with the original non-treated EMS source; some selections were found to have excellent fiber quality under diverse ***: Some of these selections are being considered for germplasm release and could be useful for improving the fiber quality of cotton under water limited conditions, thereby helping to ensure the long-term survival of the cotton industry on the Texas High Plains.

关键词： Breeding Drought EMS Ethyl MethaneSulfonate Fiber quality Selection