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Detection of Thermophysical Properties for High Strength Concrete after Exposure to High Temperature杜红秀1,WU Jia2,LIU Gaili1,WU Huiping1,YAN Ruizhen11. College of Architecture and Civil Engineering, Taiyuan University of Technology2. Shanxi Electric Power Research Institute摘 要:Using the detection principle of infrared thermal imaging technique......
The Salt Attack Performance of Magnesium Oxychloride Cement Exposure to Three Kinds of Brines黄青1,2,3,LI Ying1,2,CHANG Chenggong1,2,WEN Jing1,2,DONG Jinmei1,2,ZHENG Weixin1,2,3,A Danchun1,2,3,LIU Pan1,2,3,DONG Fei1,2,3,ZHOU Yuan1,2,肖学英1,21. Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences2. Key......
两种铸造镍基高温合金在长期时效期间的微观组织和力学性能演变秦学智1,郭建亭1,袁超1,侯介山1,周兰章1,叶恒强1(1.辽宁省沈阳市科学院金属研究所)摘 要:长期时效期间K452和K446合金中的γ′相形貌都保持球形,尺寸不断粗化,但K446中γ′相的粗化速率总体上比K452快.初生MC的热稳定性不仅与MC本身的化学成分密切相关,而且与合金成分有关;合金中γ基体的热稳定性(即晶内二次碳化物或TCP相的析出)与初生MC的热稳定性有关;晶界粗化通过γ′沉淀及镶嵌于其中的碳化物(M23C6或M6C)的析出和长大来实现......
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σ-Phase Precipitation Mechanism of 15Cr–15Ni Titanium-Modified Austenitic Stainless Steel During Long-Term Thermal ExposureZhi-Nan Wang1,Tian Liang1,Wei-Wei Xing1,Ai-Bing Du2,Ming Gao1,Ying-Che...="ChDivSummary">The σ-Phase precipitation in 20% cold-worked 15Cr–15Ni titanium-modified austenitic stainless steel was studied during long-term aging treatment. During the isothermal aging stage, the amount......
et al [34] noted that the grain boundary is the weak phase during long time thermal exposure. Compared to the coarse secondary intermetallics, the chain- type heat-resistant secondary... boundary sliding during long thermal exposure duration [6]. Hence, to develop the heat-resistant Al alloys with highly enhanced elevated temperature tensile properties after long thermal exposure......
on the Ahrrenius relationship was used to evaluated long time exposures at high temperatures. To simulate longer exposures at lower temperatures, coatings were exposed to higher temperatures for the same time...The Influence of High Temperature Exposure on the Wear Performance of a Ni Based Alloy PTA Coating Ana Sofia C.M.d'Oliveira1,Karin Graf1 (1.Mechanical Department of Universidade Federal do Parana......
, heat treatment and thermal exposure, the as-cast bars were experienced the standard heat treatment (SHT) and long-term unstressed thermal exposure. The SHT schedule was described as follows: 1300 °C, 2... as a function of as-cast, heat treatment and thermal exposure. The microstructure and composition of the alloy were investigated by optical microscopy, scanning electron microanalysis (SEM), electron probe......
,heat treatment(400℃),long-time air exposure and ultra-high vacuum(1×10-7 Pa) treatment.Subsequent characterization showed that different post-deposition treatments resulted in different wetting... and superhydrophilicity after Ar-plasma or heat treatment,linked to hydrocarbon adsorption onto and desorption from the surface.Yb2O3 coatings after long-time air exposure and ultra-high vacuum treatment both......
of the M6 C phase do not agree with the experimental findings.The major precipitates of Alloy 1 at temperatures of700℃ and 750℃ during long-time exposure are M23 C6,γ′ phase and MC;for Alloy 2,they are M23... that would transform into M12 C after 5000-h exposure at 750℃.A great quantity of needle-like μ phases precipitated after exposure at 750℃ for5000 h,which have no effect on the impact properties......
