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Cyclic Stability of Superelasticity in[001]‑Oriented Quenched Ni_(44)Fe_(19)Ga_(27)Co_(10)and Ni_(39)Fe_(19)Ga_(27)Co_(15)Single Crystals

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Acta Metallurgica Sinica(English Letters) 2023年第4期36卷 650-660页

作者： E.E.Timofeeva E.Yu.panchenko A.S.Eftifeeva A.I.Tagiltsev N.Yu.Surikov A.B.Tokhmetova E.I.Yanushonite M.v.Zherdeva I.Karaman Yu.I.Chumlyakov Tomsk State University Novosobornaya Square 1Tomsk 634050Russia Texas A&M University College StationTX 77843USA

The study of the influence of the cobalt content on the cyclic stability of superelasticity(SE)was carried out in quenched Ni_(44)Fe_(19)Ga_(27)Co_(10)and Ni_(39)Fe_(19)Ga_(27)Co_(15)(at.%)single crystals under *** is shown that an increase in the cobalt content leads to embrittlement of the material and a decrease in the cyclic stability of *** Ni_(44)Fe_(19)Ga_(27)Co_(10)single crystals,during the first 20 loading/unloading cycles,the elastic energy relaxation occurs along with the formation of dislocations and residual martensite,which leads to a decrease in critical stress of martensite formation and in stress *** the next 80 cycles,SE becomes more *** is accompanied by a slight change in the *** the contrary,Ni_(39)Fe_(19)Ga_(27)Co_(15)single crystals are characterized by high-strength characteristics,which lead to high SE stability during the first 20 loading/unloading ***,after 20 cycles,a strong degradation of the SE is observed through the formation of microcracks,which ultimately leads to the destruction of the *** results of work are replicable for cycling at different temperatures from all temperature ranges of superelasticity.

关键词： Martensitic transformations Superelasticity Single crystals Cyclic stability Microstructure

Diffuse discharges in SF_(6)and mixtures of SF_(6)with H_(2),formed by nanosecond voltage pulses in non-uniform electric field

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High voltage 2018年第4期3卷 316-322页

作者： Alexei N.panchenko victor F.Tarasenko Dmitry v.Beloplotov Nikolay A.panchenko Mikhail I.Lomaev Institute of High Current Electronics Siberian Branch(SB)Russian Academy of Sciences(RAS)Tomsk 634055Russia Faculty of Innovative Technologies National Research Tomsk State UniversityTomsk 634050Russia Department of Photonics and Quantum Electronics National Research Tomsk Polytechnic UniversityTomsk 634050Russia Department of Physics Tomsk State University of Control Systems and RadioelectronicsTomsk 634050Russia

Results of experimental study of nanosecond diffuse discharge in SF_(6)and gas mixtures of SF_(6)with H_(2),D_(2)and C_(2)H_(6)are *** aim of this work is to study parameters of discharge between two extended electrodes with a small radius of curvature in SF_(6)and SF_(6)with *** was shown that diffuse discharge can be formed in SF_(6)at elevated pressure between blade electrodes with length of 30 *** was also confirmed that in a sharply non-uniform electric field a beam of runaway electrons is generated and that the gap breakdown occurs due to ionisation waves which begin on electrodes with small radius of *** action in the infrared spectral region was obtained in SF_(6)-H_(2)(D_(2),C_(2)H_(6))*** laser output up to 110 mJ was easily achieved which corresponds to ultimate intrinsic efficiency(with respect to deposited energy)of 10%.

关键词： breakdown uniform radius

基于XeF(C-A)放大器的混合(固态/气态)超高功率飞秒激光系统(英文)

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光学精密工程 2011年第2期19卷 252-259页

作者： LOSEv v ALEKSEEv S IvANOv N KOvALCHUK B MIKHEEvL MESYATS G panchenko Yu PUCHIKIN A RATAKHIN N YASTREMSKY A Institute of High Current Electronics of Siberian Branch of Russian Academy of Sciences aveAkademichesky 2/3Tomsk 634055Russia Lebedev Physical Institute of Russian Academy of Sciences Leninsky Prospekt53119991 Russia

提出了基于前端发生器和终端放大器,使用光泵浦XeF（C-A）激活介质的太瓦级混合激光器（THL-100）系统。前端发生器由长532 nm的连续激光泵浦的钛宝石飞秒脉冲振荡器,脉冲展宽机构,532 nm的脉冲激光泵浦的再生多通道放大器,衍射光栅压... 详细信息

提出了基于前端发生器和终端放大器,使用光泵浦XeF（C-A）激活介质的太瓦级混合激光器（THL-100）系统。前端发生器由长532 nm的连续激光泵浦的钛宝石飞秒脉冲振荡器,脉冲展宽机构,532 nm的脉冲激光泵浦的再生多通道放大器,衍射光栅压缩器和二次谐波发生器（KDP）组成。其光束输出参数为：脉冲持续时间50 fs,二次谐波（475 nm）辐射能量5 mJ。前端发生器以10 Hz的单脉冲模式工作。XeF（C-A）放大器由双高压脉冲发生器（线性变压器）,爆炸式阴极发射真空二极管,电子束注入系统,充满Xe的气室转换器和激光单元组成。高压发生器包括12个变压器,每个变压器有8个电容（40 nF）和火花隙,电容可以充电至100 kv。真空二极管中的电子束参数为：总电流300 kA,峰值电压550kv,脉冲持续时间约150 ns。穿透金属箔片到达Xe转换器的6个100 cm×12 cm电子束的总能量为67 kJ。激光系统通过泵浦能量的级联处理导致Xe2＊的快速形成,并在（172±5）nm连续辐射。真空紫外辐射通过CaF2窗口辐射到含有XeF2蒸汽和氮气缓冲气体的激光单元中,使XeF2光解,形成XeF＊准分子。由真空紫外辐射泵浦的放大器激活介质长110 cm,直径为24 cm。文中通过数值模拟给出了输出参数和第一实验结果,根据XeF（C-A）放大器参数模型和增益测量结果,得到的输出能量高达23 J,这意味着50 fs脉冲的峰值功率高达4060 TW。

关键词：混合激光器 XeF(C—A)放大器飞秒脉冲宽度电子束紫外转换器

Air-Water Carbon Dioxide Exchange in the Littoral Zone of Lake Baikal (Ice-Free Period)

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International Journal of Geosciences 2013年第10期4卷 1339-1345页

作者： valentina M. Domysheva Mikhail v. panchenko Dmitry A. Pestunov Mariya v. Sakirko Siberian Branch of Russian Academy of Sciences Limnological Institute Irkutsk Russia Siberian Branch of Russian Academy of Sciences V.E. Zuev Institute of Atmospheric Optics Tomsk Russia

Lake Baikal is one of the most unique natural environments in Siberia, and it affects to a large extent the natural state in this region. Processes of gas exchange in the air-water system have been studied in Lake Baikal since 2002. Measurements have been carried out in the littoral area on the western shore of Southern Baikal (51°51'N, 105°04'E). The method of accumulative chambers was prioritized for measuring carbon dioxide fluxes in the air-water system. Chemical analysis of the water samples collected every three hours at the chamber locations was carried out in the on-land laboratory. We measured pH, content of dissolved oxygen, bicarbonate, nitrate and phosphate. The CO2 content in the water was measured from pH values and the bicarbonate concentration. The total sink of CO2 on the water surface is increasing in the littoral area of Lake Baikal from 20 mg·CO2·m-2·day-1 in June to 110 mg·CO2·m-2·day-1 in August. The decrease in the flux rate usually begins in September from 95 mg·CO2·m-2·day-1 to the zero balance in late October - early November. The maximal rate of mean diurnal CO2 emissions is recorded in December in the pre-ice period (110 mg·CO2·m-2·day-1). Based on the long-term measurements during all seasons, the sink of atmospheric CO2 in the littoral zones of Lake Baikal was estimated to be 3 - 5 g·CO2·m-2.

关键词： Gas Exchange Carbon Dioxide Flux Dissolved Gases Nutrients

放电脉冲重频准分子激光器在不同应用领域的发展现状(英文)

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中国光学 2011年第1期4卷 1-8页

作者： LOSEv v F panchenko Yu N DUDAREv v v IvANOv N G KONOvALOv I N PAvLINSKY A v PUCHIKIN A v 俄罗斯科学院西伯利亚分院强电流研究所托木斯克634055

研究了脉冲宽度为25～40 ns的放电脉冲XeCl准分子激光器的工作参数。结果显示,激光器产生的脉冲能量为0.2～0.7 J,重复频率为100 Hz,表明在泵浦功率为2.8～3.3 MW/cm3时,激光器实现了2.6%的激光效率和3.8%的本征效率。

关键词：准分子激光器泵浦功率体放电预电离激光效率脉冲持续时间气体混合物

Numerical Study to Represent Non-Isothermal Melt-Crystallization Kinetics at Laser-Powder Cladding

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Modeling and Numerical Simulation of Material Science 2013年第2期3卷 61-69页

作者： v. G. Niziev F. Kh. Mirzade v. Ya. panchenko M. D. Khomenko R. v. Grishaev S. Pityana C. v. Rooyen CSIR-National Laser Centre Pretoria South Africa Institute on Laser and Information Technology Russian Academy of Sciences Moscow Russia

The study of laser-powder cladding process subject to heat transfer, melting and crystallization kinetics has been carried out numerically and experimentally. The Kolmogorov-Avrami equation was applied to describe the kinetics of the phase transitions. Characteristic behavior of temperature and conversion fields has been analyzed. Melt pool dimensions,?clad height dependences on mass feed rate, laser power and scanning velocity have been investigated. It has been demonstrated that the melt zone has the boundary distinct from the melting isotherm due to the fact that melting occurs with superheating and crystallization takes place at undercooling. The calculated melt pool depth and clad height are in a good agreement with the experimental results.

关键词： Laser Cladding Numerical Modeling Kinetics of Phase Change

纳秒激光烧蚀下液态金属表面微结构的形成(英文)

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中国光学 2011年第1期4卷 46-52页

作者： TARASENKO v F panchenko A N BULGAKOvA N M SHULEPOv M A TEL’MINOvAE 李殿军张来明姜可谢冀江俄罗斯科学院西伯利亚分院强电流研究所托木斯克634055 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室吉林长春130033 俄罗斯西伯利亚分院热物理研究所新西伯利亚630090

首次发现了在不同保护气体及多脉冲Uv-IR激光的照射下,液态金属的微型突起和微结构的形成。测量表明,针对不同的金属和保护气,这种结构的单脉冲生成速率可达(5～20)μm/pulse,形成了长度为1～2 mm,直径约为焦点两倍的单个微型突起。最后... 详细信息

首次发现了在不同保护气体及多脉冲Uv-IR激光的照射下,液态金属的微型突起和微结构的形成。测量表明,针对不同的金属和保护气,这种结构的单脉冲生成速率可达(5～20)μm/pulse,形成了长度为1～2 mm,直径约为焦点两倍的单个微型突起。最后,介绍了控制微结构形状的可能性,并讨论了它们的应用潜力。

关键词：液态金属表面微结构纳秒激光烧蚀

基于GaSe和GaSe_(0.7)S_(0.3)单晶的单脉冲CO_2激光倍频器(英文)

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中国光学 2011年第4期4卷 397-403页

作者： TARASENKO v F SITNIKOv A G panchenko A N TEL'MINOv A E GENIN D E 李殿军张来明姜可谢冀江 SARKISOv S Yu BEREZNAYA S A KOROTCHENKO Z v KAZAKOv A v 俄罗斯科学院西伯利亚分院强电流研究所俄罗斯托木斯克634055 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室吉林长春130033 托木斯克州立大学西伯利亚物理技术研究所半导体材料科学实验室托木斯克634034俄罗斯

描述了使用电感储能发生器和半导体转换开关泵浦的工作波长为10.6μm的高效CO2激光器。给出了激光泵浦的非线性晶体GaSe和GaSe0.7S0.3的二次谐波振荡的实验数据和理论估算结果。结果显示,GaSe晶体在输入能量为180mJ时,最大能量转换效率... 详细信息

描述了使用电感储能发生器和半导体转换开关泵浦的工作波长为10.6μm的高效CO2激光器。给出了激光泵浦的非线性晶体GaSe和GaSe0.7S0.3的二次谐波振荡的实验数据和理论估算结果。结果显示,GaSe晶体在输入能量为180mJ时,最大能量转换效率为0.38%,倍频激光的峰值功率为8 kW。

关键词： GaSe GaSe0.7S0.3 单脉冲CO2激光倍频器

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多室环式焙烧炉效率的提高

炭素技术 1989年第5期8卷 37-38页

作者： Лутков А.Н. Калинин Э.В. Панченко В.И. 田国川

在焙烧炭素制品方面多室环式焙烧炉用得最为广泛。坯料在炉中加热到800～900℃需200～400小时,而且加热得很不均匀。炉箱内最大温差为250～300℃,烟气和坯料的温差为300～500℃,炉箱上部温度最高。炉箱水平截面上的温度不均匀度为50～10... 详细信息

在焙烧炭素制品方面多室环式焙烧炉用得最为广泛。坯料在炉中加热到800～900℃需200～400小时,而且加热得很不均匀。炉箱内最大温差为250～300℃,烟气和坯料的温差为300～500℃,炉箱上部温度最高。炉箱水平截面上的温度不均匀度为50～100℃。炉内加热不均匀会使理化反应过程的迷度不同,因而坯料体积内的性质不均匀,以及形成裂缝和变形。

关键词：焙烧炉环式内加热理化反应形成裂缝水平截面炭素制品不均匀度均匀程度炉室