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Influence of Ru addition on microstructure and stress-rupture property of Ni-based single crystal superalloys

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Progress in Natural Science:Materials International 2010年第1期20卷 61-69页

作者： Jing-yang CHEN~1,Qiang FENG~(1,2),La-mei CAO~3.Zu-qing SUN~1 1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology beijing, beijing 100083.china 2.{3. center for Materials Service Safety,University of Science and Technology beijing,beijing 100083.china 3.{3. Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials, beijing Institute of Aeronautical Materials,beijing 100095,china State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China national center for Materials Service Safety University of Science and Technology Beijing Beijing 100083 China national Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials Beijing Institute of Aeronautical Materials Beijing 100095 China

The effects of Ru on the microstructure and stress-rupture property were investigated in two experimental Ni-based single crystal superalloys with and without Ru addition(5.1%,mass fraction).The results indicate that the morphology ofγ' precipitates in the dendrite core and interdendritic region are intermediate and nearly spherical,respectively,in the Ru-free alloy after being aged at 1100℃for 8 *** Re partitioning ratio increases due to Ru addition and Ru partitioned preferentially to theγphase in both dendrite core and interdendritic region of the Ru-containing alloy,which results in more negative lattice misfit and more cuboidalγ' ***,theγ' volume fraction increases while the precipitate size and y channel width decreases due to Ru addition in both dendrite core and interdendritic *** addition improves the stress-rupture life at 1100℃/140 MPa significantly due to higherγ' volume fraction,more negative lattice misfit and a well rafting structure as well as lessγchannel width.

关键词： Ni-based superalloys ruthenium elemental partitioning ratio lattice misfit γ’ morphology stress-rupture property

Effect of Heating Rate Before Tempering on Reversed Austenite in Fe-9Ni-C Alloy

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Journal of Iron and Steel Research International 2012年第9期19卷 73-78页

作者： ZHANG Kun , TANG Di , WU Hui-bin ( national Engineering Research center of Advanced Rolling , University of Science and Technology beijing , beijing 100083., china ) national Engineering Research center of Advanced Rolling University of Science and Technology Beijing Beijing China

The alloy was reheated to 580℃ for tempering at rates of 2 , 5 , 10 , 20 , and 40℃ / s , respectively , after *** amount , distribution , and stability of reversed austenite were investigated by X-ray diffraction ( XRD ) and electron back scatter diffraction ( EBSD ) .The microstructure and cryogenic impact energy were studied by scanning electron microscope ( SEM ), transmission electron microscope ( TEM ) and Charpy V-notch ( CVN ) *** results showed that when the sample was heated at 10℃ / s , the volume fraction of reversed austenite exhibited maximum of 8% ; the reversed austenite was uniform along all kinds of boundaries ; the reversed austenite contained higher concentration of carbon which enabled it to be more *** cryogenic toughness of the alloy was greatly improved when heated at 10℃ / s , as the fracture surface observation showed that it mainly fractured in ductile rupture mode , which was consistent with the results of cryogenic impact energy.

关键词： 9Ni steel heating rate reversed austenite cryogenic toughness

Southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western South china Sea

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Science china Earth Sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2,3. XIA Bin1, LI Xuxuan1,3. ZHANG Minqiang1,3. NIU Binhua2, ZHONG Lifeng1, JIN Qinghuan1,4 & JI Shaocheng1,5 1. Key Laboratory of Marginal Sea Geology and Resources, Chinese Academy of Sciences,Guangzhou 510640, china 2. china University of Geosciences (beijing), beijing 100083. china 3. Research center of Science & Technology Department, CNOOC, beijing 100027, china 4. Guangzhou Marine Geological Survey, Ministry of Land & Resources, Guangzhou 510075, china 5. Ecole Polytechnique Montreal, H3.3.7, Canada Key Laboratory of Marginal Sea Geology and Resources Chinese Academy of Sciences Guangzhou China china University of Geosciences (beijing) Beijing China Research center of Science & Technology Department CNOOC Beijing China Guangzhou Marine Geological Survey Ministry of Land & Resources Guangzhou China Ecole Polytechnique Montreal Canada

Recent geophysical surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the South china Sea (SCS). The RRFZ, which separates the South china and Indochina block, extends first along the Yuedong fault, offshore of Vietnam, and then continues southward and breaks off into two branches: the Lupar fault and the Tinjia fault. The southern extension of the Lupar fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reaches the Brunei-Sabah area. According to the gravity and geomagnetic data, and the tectonic evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha block. The Tinjia fault may be the boundary between the Balingian block and the Nansha block. Hence, the line linking the Yue- dong fault and the Tinjia fault, which both are continental margin faults and strike-slip ones in the geological evolution histories, constitute the boundary between the Indochina and Nansha block. The Lupar fault, in contrast, is an intraplate fault within the Indochina block. The results provide new hints for reconstructing the tectonic evolution history of the RRFZ and the opening of the SCS, and also a framework for hydrocarbon prospecting in the region.

关键词： Red River fault zone, tectonic evolution, fault, extension, western South china Sea.

成人肢体及浅表躯干软组织肉瘤放疗靶区勾画和计划设计指南

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中华放射肿瘤学杂志 2024年第9期33卷 785-796页

作者：国家癌症中心/国家肿瘤质控中心金晶唐源陈司霖雷俊琴陈德启不详国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院放疗科北京100021 国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院深圳医院放疗科深圳518116 中国医学科学院肿瘤医院福建医科大学附属协和医院中国医学科学院肿瘤医院深圳医院

局限肢体软组织肉瘤(STS)的主要治疗方法是获得阴性切缘的原发肿瘤广泛切除,治疗的目标是维持生存、避免复发及转移、最大限度保全功能及减少并发症.对于大部分的成人肢体STS,放疗联合保肢手术可获得与截肢手术相当的局部控制率,并且局... 详细信息

局限肢体软组织肉瘤(STS)的主要治疗方法是获得阴性切缘的原发肿瘤广泛切除,治疗的目标是维持生存、避免复发及转移、最大限度保全功能及减少并发症.对于大部分的成人肢体STS,放疗联合保肢手术可获得与截肢手术相当的局部控制率,并且局部控制率高于任何单一治疗手段,是目前标准的治疗模式.本指南由国家肿瘤质控中心牵头,多位专家共同制定,详细阐述了成人肢体STS的诊疗概况及调强放疗的具体实施.诊疗概况包括流行病学、诊断、分期及治疗原则.放疗实施包括准备、治疗决策、放疗适应证、定位、靶区勾画、处方和危及器官限量及计划设计,并从术前放疗、术后放疗两个方面分别阐述,涵盖了诊疗全过程,提供了全方位的放疗指导.

关键词：肉瘤,软组织放射疗法靶区勾画计划设计

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全身照射技术实践指南

中华放射肿瘤学杂志 2024年第6期33卷 485-498页

作者：国家癌症中心/国家肿瘤质控中心傅深李左峰余奇张风娇高正心不详泰和诚医疗集团北京100020 上海泰和诚肿瘤医院上海200240 上海美中嘉和肿瘤门诊部

全身照射(TBI)是一类特殊的放射治疗技术,是指利用钴-60γ射线或高能X线对全身进行放射治疗,常用于造血干细胞移植(HSCT)前预处理。本指南以国际[国际淋巴瘤放射治疗协作组(ILROG)、美国放射学会(ACR)-美国放射肿瘤学会(ASTRO)、美国医... 详细信息

全身照射(TBI)是一类特殊的放射治疗技术,是指利用钴-60γ射线或高能X线对全身进行放射治疗,常用于造血干细胞移植(HSCT)前预处理。本指南以国际[国际淋巴瘤放射治疗协作组(ILROG)、美国放射学会(ACR)-美国放射肿瘤学会(ASTRO)、美国医学物理师协会(AAPM)等]TBI技术相关的指南共识作为参考,以国内外TBI技术临床应用发表的文献资料为支撑,结合指南各申请单位已有的知识积累及丰富的临床实践经验编写而成。本指南内容涵盖了开展TBI放疗技术的设备要求、医务人员资质要求和职责范围、临床应用的适应证、TBI技术应用流程及其相关的质量保证和质量控制标准等,旨在为国内各医疗机构开展TBI技术提供参考。

关键词：全身照射放射疗法造血干细胞移植实践指南

Solar release time of solar energetic particles and associated acceleration source in corona

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Chinese Science Bulletin 2008年第2期53卷 161-168页

作者： LE GuiMing1,2,3.4, TANG YuHua1 & HAN YanBen4 1 Department of Astronomy, Nanjing University, Nanjing 210093. china 2 Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, china Meteorological Administration, beijing 100081, china 3.national center for Space Weather, china Meteorological Administration, beijing 100081, china 4 national Astronomical Observatories, Chinese Academy of Sciences, beijing 100012, china Department of Astronomy Nanjing University Nanjing China Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites China Meteorological Administration Beijing China national center for Space Weather China Meteorological Administration Beijing China national Astronomical Observatories Chinese Academy of Sciences Beijing China

Solar energetic particles (SEPs) are accelerated in corona at an early phase of solar energetic particle events (SEPE). The acceleration mechanism of SEPs in corona can only be inferred from an analysis of multi-band observational data, as the observation of SEPs is usually made around 1AU. In this context, people have investigated spectrums, charge state, solar release time (SRT), and multi-band data of SEPEs, in an attempt to judge the acceleration mechanism of SEPs. The SRT computation of SEPs is an important and commonly used approach to study the acceleration mechanism of SEPs in corona. This paper reviews some important findings concerning the SRT computation of SEPs, and analyzes different merits of each approach for such calculation, based on a range of SEPE case studies. This paper also analyzes and discusses both possible and actual acceleration mechanisms of a number of SEPEs, by calculating the SRT of the SEPEs. Finally, the paper summarizes the possible problems in studying an acceleration mechanism of SEPEs inferred from the SRT of SEP.

关键词：阳光释放时间加速度电晕太阳耀斑

GLOBAL CLIMATE CHANGES AND THE TOURISM OF china

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Journal of Geographical Sciences 1996年第2期6卷 97-102页

作者： Ren Guoyu(national Climate center, beijing 100081People’s Republic of{3.) national Climate center Beijing 100081 China

The future global climate changes induced by the increased atmospheric CO2 concentration is receiving much attention from the scientific community as well as the public. Model simulations and palaeoclimatic data studies show an evident change in temperature and precipitation over china will occur under conditions of the global warming. Possible scenarios of the future climates are given here for china on the basis of synthesizing model simulations and palaeoclimatic data. Most parts of china will experience an increase in temperature, but the warming may be more remarkable in winter in h1e northern half of the country. Increase in precipitation will be seen in nearly every parts of the eastern china, and it will be larger in North and Northeast china. Impacts of the climate changes on the national tourism are assessed. Regions suitable for tourisin development in terms of climate comfortable index will shift northward. Some scenic spots and toruism facilities will be damaged due to sea level rise and increased rainfall. Some regions will benefit from the dimate change, but the tourism industry as a whole will be negatively affected.

关键词： IPCC GLOBAL CLIMATE CHANGES AND THE TOURISM OF china

Compression behavior of Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5) bulk metallic glass up to 24.GPa

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Science china(Physics,Mechanics & Astronomy) 2005年第3期48卷 319-324页

作者： LI Gong 1, 2 , ZHAN Zaiji 2 , LIU Jing 3., YUN Jinku 1 , SUN Liling 2 , LIU Riping 1 , ZHANG Jun 2 & WANG Wenkui 1, 2 1. Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, china 2. center for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, beijing 100080, china 3. BSRF, Institute of High Energy Physics, Chinese Academy of Sciences, beijing 10003., china Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao China center for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing China BSRF Institute of High Energy Physics Chinese Academy of Sciences Beijing China

The compression of a Zr41Ti14Cu12.5Ni10Be22.5 bulk metallic glass (BMG) is investigated at room temperature up to 24.GPa using in-situ high pressure energy dispersive X-ray diffraction with a synchrotron radiation source. The pressure-induced structural relaxation is exhibited. It is found that below about 8 GPa, the existence of excess free volume contributes to the rapid structural relaxation, which gives rise to the rapid volumetric change, and the structural relaxation results in the structural stiffness under higher pressure.

关键词： bulk metallic glass, high pressure, structural relaxation, synchrotron radiation.

Applied research of landscape ecology in desertification monitoring and assessment

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Journal of Environmental Sciences 2000年第3期12卷 349-354页

作者： LI Feng, SUN Si heng (Academy of Forest Inventory and Planning/china national Desertification Monitoring center, State Forestry Administration, {3. 100714, china) Academy of Forest Inventory and Planning/china national Dese 北京 1 0 0 71 4

A preliminary research on landscape ecology in desertification monitoring and assessment was reported. Also, this paper laid stress on the study of landscape diversity, dominance, evenness and Markov Matrix model and their respective landscape ecological meanings in the desertification monitoring and assessment. Concurrently, it took Shazhuyu Experimental Area, Qinghai Province as a specific case study.

关键词： landscape ecology desertification monitoring and assessment Shazhuyu Experimental Area