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Recrystallizaiton Behavior of Directionally Solidified DZ4 Superalloy TAO Chun-Hu1,LI Yun-ju1,ZHANG Wei-fang1 (1.Failure Analysis Center of AVIC, Beijing Institute of Aeronautical Materials, Beijing, China) 摘要:This article investigated effects of degrees of deformation, heat treatment temperatures and holding times on the recrystallization behavior of directionally solidified DZ4 superalloy......
Microstructure Development of Directionally Solidified Nb-Ti-Si Based Ultrahigh Temperature Alloy () 摘要:Integrally directional solidification of an Nb-Ti-Si based ultrahigh temperature alloy... solidification was revealed. The integrally directionally solidified microstructure was composed of couple grown lamellar (Nb_(ss)+(Nb,X)_5Si_3) eutectic colonies and a few hexagonally cross-sectioned (Nb,X......
Mechanical properties of directionally solidified lead-antimony alloysMevlüSahin1,Hasan Kaya21. Department of Physics,Faculty of Arts and Sciences,Nigde University,Nigde 51200,Turkey2. Department of Science Education,Faculty of Education,Erciyes University,Kayseri 38039,Turkey摘 要:The Pb-17wt% Sb alloy was directionally solidified under two......
directionally solidified superalloy GUO Yun-qiang, ZHANG Ke-shi, GENG Xiao-liang, LIU Qin (School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China ) Abstract: Directionally solidified superalloys elastic constants were analyzed by employing statistical and random sampling methods. The results show that the coefficient of variation......
Microstructure and microhardness of directionally solidified NiAl-W eutectic alloyJian-Jun Gao1,2,Zhi-Long Zhao2,Lu-Feng Wei2,Kai Cui2,Lin Liu31. School of Mechanical Engineering and Automation...="ChDivSummary" name="ChDivSummary">The microstructure and microhardness of directionally solidified NiAl-W eutectic alloys at growth rates of 2-25 μm·s-1 were investigated by a Bridgman crystal growing facility......
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Brazing of directionally solidified TiAl-based alloy with Ti-Zr-Ni-Cu filler metalHE Peng,LIU Duo,FENG Jicai,and WANG Lun State Key Lab of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China摘 要:Brazing of directionally solidified TiAl-based alloy with Ti-Zr-Ni-Cu filler metal was investigated.For brazing,according......
High temperature tensile properties of directionally solidified Ni-43Ti-4Al-2Nb-2Hf alloyJIANG Dongwen,ZHENG Lijing,ZHOU Lei,PAN Liwen,TANG Xiaoxia,and ZHANG Hu School of Materials Science... fraction) alloy was directionally solidified(DS).The microstructure and tensile properties at room and elevated temperature were investigated.It was found that the DS process significantly improves......
Hot workability characteristics of Rene88DT superalloy with directionally solidified microstructureFu-Lin Li,Rui Fu,Di Feng,Zhi-Ling TianSuperalloy Department, Central Iron & Steel Research Institute摘 要:The hot deformation characteristics of Rene88 DT superalloy with directionally solidified microstructure produced by electroslag remelting continuous......
DZ417G镍基定向凝固高温合金的再结晶彭胜1,周兰章1,侯介山1,郭建亭1(1.辽宁省沈阳市科学院金属研究所)摘 要:研究了喷砂和机加工后DZ417G合金在热处理过程中的组织演化及其对拉伸,持久性能的影响.结果表明:喷砂和机加工后,DZ417G合金样品热处理后表面发生了再结晶.扫描电镜观察发现固溶处理样品中的再结晶晶粒呈等轴晶晶粒,而在时效处理后再结晶晶粒呈胞状形式生长.表层再结晶使室温拉伸强度有一定程度的降低,对高温拉伸强度影响不大.表面再结晶厚度在持久过程中增加.表层等轴晶再结晶组织使持久性能降低,二次胞......
