Acta Metall Sin  1996, Vol. 32 Issue (6): 589-593    DOI:

Current Issue | Archive | Adv Search |

TEM STUDY OF PRECIPITATED PHASES IN P／M INCONEL 718 ALLOY UNDER LONG TIME EXPOSURE

XIAO Sufen; CHEN Mengzhe; WANG Hing; DONG Jianxin; XIE Xishan (University of Science and Technology Beijing; Beijing 100083)

XIAO Sufen; CHEN Mengzhe; WANG Hing; DONG Jianxin; XIE Xishan (University of Science and Technology Beijing; Beijing 100083). TEM STUDY OF PRECIPITATED PHASES IN P／M INCONEL 718 ALLOY UNDER LONG TIME EXPOSURE. Acta Metall Sin, 1996, 32(6): 589-593.

Abstract References Related Articles Recommended Metrics Download:  PDF(468KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The precipitation and coarsening behaviours of γ", γ' and δ phases in powder manufactured modified 718 alloy with variation of chemical composition and heat treatment at 650 ℃ aging, up to 10000 h as well as 750℃, 1000 h, have been studied in comparison with that in conventional 718 alloy by TEM. Experimental results show that the precipitation behaviour of γ" and γ' phase in the modified alloy is different from that in conventional one. In the former, γ" and γ' phases precipitate in compact morphology and composite structure and in the later, γ" phase andγ' phase precipitate independently. The coarsening rate of γ" phase in the modified alloy at 650 ℃ aging is slower than that in conventional one. The structure of modified alloy is more stable than coventional alloy. Large plates of δ phase precipitate in γ' matrix of both alloys at 750℃, however the morphology and the amount of δ phases in two alloys are different. Key words:  superalloy      INCONEL 718      long-time aging      Received:  18 June 1996      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1996/V32/I6/589 1DongJianxin,XieXishan,ZhangShouhua．ActaMetallSin(EngEd),1993;6A:4102CozarR,PineauA．MetallTrans,1973;4A;473王宁．北京科技大学博士学位论文,19944QuistWE．MetallTrans,1971;2:8255PaulonisDF,OblakJM．TransASM,1969;162:6116ChenMZ,MansfieldJF,LiangQ,XieXSIn:KuoKH,ZhaiZHeds,5thAsiaPacificElectronMicroscopeConference,WordScientific,1992:3247AndrieuE,CozarR,PineauA．Superalloy718MetallurgyandApplications．TMS,1989:241 [1] BAI Jiaming, LIU Jiantao, JIA Jian, ZHANG Yiwen. Creep Properties and Solute Atomic Segregation of High-W and High-Ta Type Powder Metallurgy Superalloy[J]. 金属学报, 2023, 59(9): 1230-1242. [2] JIANG He, NAI Qiliang, XU Chao, ZHAO Xiao, YAO Zhihao, DONG Jianxin. Sensitive Temperature and Reason of Rapid Fatigue Crack Propagation in Nickel-Based Superalloy[J]. 金属学报, 2023, 59(9): 1190-1200. [3] FENG Qiang, LU Song, LI Wendao, ZHANG Xiaorui, LI Longfei, ZOU Min, ZHUANG Xiaoli. Recent Progress in Alloy Design and Creep Mechanism of γ'-Strengthened Co-Based Superalloys[J]. 金属学报, 2023, 59(9): 1125-1143. [4] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1109-1124. [5] GONG Shengkai, LIU Yuan, GENG Lilun, RU Yi, ZHAO Wenyue, PEI Yanling, LI Shusuo. Advances in the Regulation and Interfacial Behavior of Coatings/Superalloys[J]. 金属学报, 2023, 59(9): 1097-1108. [6] ZHAO Peng, XIE Guang, DUAN Huichao, ZHANG Jian, DU Kui. Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1221-1229. [7] LU Nannan, GUO Yimo, YANG Shulin, LIANG Jingjing, ZHOU Yizhou, SUN Xiaofeng, LI Jinguo. Formation Mechanisms of Hot Cracks in Laser Additive Repairing Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1243-1252. [8] BI Zhongnan, QIN Hailong, LIU Pei, SHI Songyi, XIE Jinli, ZHANG Ji. Research Progress Regarding Quantitative Characterization and Control Technology of Residual Stress in Superalloy Forgings[J]. 金属学报, 2023, 59(9): 1144-1158. [9] ZHENG Liang, ZHANG Qiang, LI Zhou, ZHANG Guoqing. Effects of Oxygen Increasing/Decreasing Processes on Surface Characteristics of Superalloy Powders and Properties of Their Bulk Alloy Counterparts: Powders Storage and Degassing[J]. 金属学报, 2023, 59(9): 1265-1278. [10] LI Jiarong, DONG Jianmin, HAN Mei, LIU Shizhong. Effects of Sand Blasting on Surface Integrity and High Cycle Fatigue Properties of DD6 Single Crystal Superalloy[J]. 金属学报, 2023, 59(9): 1201-1208. [11] WANG Lei, LIU Mengya, LIU Yang, SONG Xiu, MENG Fanqiang. Research Progress on Surface Impact Strengthening Mechanisms and Application of Nickel-Based Superalloys[J]. 金属学报, 2023, 59(9): 1173-1189. [12] MA Dexin, ZHAO Yunxing, XU Weitai, WANG Fu. Effect of Gravity on Directionally Solidified Structure of Superalloys[J]. 金属学报, 2023, 59(9): 1279-1290. [13] CHEN Jia, GUO Min, YANG Min, LIU Lin, ZHANG Jun. Effects of W Concentration on Creep Microstructure and Property of Novel Co-Based Superalloys[J]. 金属学报, 2023, 59(9): 1209-1220. [14] MU Yahang, ZHANG Xue, CHEN Ziming, SUN Xiaofeng, LIANG Jingjing, LI Jinguo, ZHOU Yizhou. Modeling of Crack Susceptibility of Ni-Based Superalloy for Additive Manufacturing via Thermodynamic Calculation and Machine Learning[J]. 金属学报, 2023, 59(8): 1075-1086. [15] LIU Xingjun, WEI Zhenbang, LU Yong, HAN Jiajia, SHI Rongpei, WANG Cuiping. Progress on the Diffusion Kinetics of Novel Co-based and Nb-Si-based Superalloys[J]. 金属学报, 2023, 59(8): 969-985. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed