Acta Metall Sin  1988, Vol. 24 Issue (5): 354-360    DOI:

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ACOUSTIC EMISSION AND HYDROGEN EVOLUTION DURING SOLIDIFICATION OF ALUMINUM ALLOYS

ZHOU Zhao;JI Shichen;HU Zhuangqi;SHI Changxu (C.H. Shih) Institute of Metal Research; Academia Sinica; Shenyang

ZHOU Zhao;JI Shichen;HU Zhuangqi;SHI Changxu (C.H. Shih) Institute of Metal Research; Academia Sinica; Shenyang. ACOUSTIC EMISSION AND HYDROGEN EVOLUTION DURING SOLIDIFICATION OF ALUMINUM ALLOYS. Acta Metall Sin, 1988, 24(5): 354-360.

Abstract References Related Articles Recommended Metrics Download:  PDF(1226KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Study of the solidification process of both Al-Si and Al-Cu alloysproved the presence of acoustic emission phenomena. Two peaks of count rate hasbeen observed. The total counts of both peaks increases with the increasing hydro-gen content of the alloy. The mechanism of producing the acoustic emission hasbeen discussed. At the same time, results obtained by other techniques strongly sup-port the good correlation between the acoustic emission and hydrogen releasing dur-ing solidification. The bubble nucleation between dendrite arms is the main causeof the first peak, while the fracture of the bridge connecting the interdendrites atthe later stage of solidification is the main cause of the second peak. It is proba-bly due to high pressure the hydrogen evolution and accumulation created by in theinterdendritic region. Key words:  aluminum alloys      acoustic emission      solidification      hydrogen in alloys      Received:  18 May 1988      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/Y1988/V24/I5/354 1 Kaiser J. Arch Eisenhuettenwes, 1953; 24: 43 2 Tensi H M, Radtke W. Metall. 1978: 32: 681 3 Feurer U, Wundelin R. Listening to Solidification-Aluminium Alloys by Acoustic Emission Measurement. Vortragsmanuskript, Sheffield. 1977 4 #12 5 Coble R L, Flemings M C. Metall Trans, 1971; 2: 409 6 Kubo K, Pehlke R D. Metall Trans, 1985; 168: 359 7 李庆春、铸件形成理论基础,北京:机械工业出版社,1982:253 [1] 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. [2] 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. [3] HOU Juan, DAI Binbin, MIN Shiling, LIU Hui, JIANG Menglei, YANG Fan. Influence of Size Design on Microstructure and Properties of 304L Stainless Steel by Selective Laser Melting[J]. 金属学报, 2023, 59(5): 623-635. [4] LIU Jihao, ZHOU Jian, WU Huibin, MA Dangshen, XU Huixia, MA Zhijun. Segregation and Solidification Mechanism in Spray-Formed M3 High-Speed Steel[J]. 金属学报, 2023, 59(5): 599-610. [5] SU Zhenqi, ZHANG Congjiang, YUAN Xiaotan, HU Xingjin, LU Keke, REN Weili, DING Biao, ZHENG Tianxiang, SHEN Zhe, ZHONG Yunbo, WANG Hui, WANG Qiuliang. Formation and Evolution of Stray Grains on Remelted Interface in the Seed Crystal During the Directional Solidification of Single-Crystal Superalloys Assisted by Vertical Static Magnetic Field[J]. 金属学报, 2023, 59(12): 1568-1580. [6] LIANG Chen, WANG Xiaojuan, WANG Haipeng. Formation Mechanism of B2 Phase and Micro-Mechanical Property of Rapidly Solidified Ti-Al-Nb Alloy[J]. 金属学报, 2022, 58(9): 1169-1178. [7] LI Shanshan, CHEN Yun, GONG Tongzhao, CHEN Xingqiu, FU Paixian, LI Dianzhong. Effect of Cooling Rate on the Precipitation Mechanism of Primary Carbide During Solidification in High Carbon-Chromium Bearing Steel[J]. 金属学报, 2022, 58(8): 1024-1034. [8] LI Yanqiang, ZHAO Jiuzhou, JIANG Hongxiang, HE Jie. Microstructure Formation in Directionally Solidified Pb-Al Alloy[J]. 金属学报, 2022, 58(8): 1072-1082. [9] GUO Dongwei, GUO Kunhui, ZHANG Fuli, ZHANG Fei, CAO Jianghai, HOU Zibing. A New Method for CET Position Determination of Continuous Casting Billet Based on the Variation Characteristics of Secondary Dendrite Arm Spacing[J]. 金属学报, 2022, 58(6): 827-836. [10] WU Guohua, TONG Xin, JIANG Rui, DING Wenjiang. Grain Refinement of As-Cast Mg-RE Alloys: Research Progress and Future Prospect[J]. 金属学报, 2022, 58(4): 385-399. [11] DING Zongye, HU Qiaodan, LU Wenquan, LI Jianguo. In Situ Study on the Nucleation, Growth Evolution, and Motion Behavior of Hydrogen Bubbles at the Liquid/ Solid Bimetal Interface by Using Synchrotron Radiation X-Ray Imaging Technology[J]. 金属学报, 2022, 58(4): 567-580. [12] ZHANG Lei, SHI Tao, HUANG Huogen, ZHANG Pei, ZHANG Pengguo, WU Min, FA Tao. Phase Separation and Solidification Sequence of Uranium-Based Amorphous Composites[J]. 金属学报, 2022, 58(2): 225-230. [13] CHEN Ruirun, CHEN Dezhi, WANG Qi, WANG Shu, ZHOU Zhecheng, DING Hongsheng, FU Hengzhi. Research Progress on Nb-Si Base Ultrahigh Temperature Alloys and Directional Solidification Technology[J]. 金属学报, 2021, 57(9): 1141-1154. [14] CAO Jianghai, HOU Zibing, GUO Zhongao, GUO Dongwei, TANG Ping. Effect of Superheat on Integral Morphology Characteristics of Solidification Structure and Permeability in Bearing Steel Billet[J]. 金属学报, 2021, 57(5): 586-594. [15] ZHANG Zhuang, LI Haiyang, ZHOU Lei, LIU Huasong, TANG Haiyan, ZHANG Jiaquan. As-Cast Spot Segregation of Gear Steel and Its Evolution in the Rolled Products[J]. 金属学报, 2021, 57(10): 1281-1290. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed