Acta Metall Sin  1998, Vol. 34 Issue (4): 431-436    DOI:

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MICROSTRUCTURES AND PROPERTIES OF IN SITU SYNTHESIS Ni/Ni-Al MULTILMER COMPOSITES

WANG Huabin; HAN Jiecai; DU Shanyi (Center of Composite Materials; Harbin Institute of Technology; Harbin 150001)

WANG Huabin; HAN Jiecai; DU Shanyi (Center of Composite Materials; Harbin Institute of Technology; Harbin 150001). MICROSTRUCTURES AND PROPERTIES OF IN SITU SYNTHESIS Ni/Ni-Al MULTILMER COMPOSITES. Acta Metall Sin, 1998, 34(4): 431-436.

Abstract References Related Articles Recommended Metrics Download:  PDF(1845KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Full-dellsity Ni/Ni-Al multilayer composites were successfully fabricated by in-situ reaction of Ni and Al foils at 620℃ for 1 hour under 1 MPa pressure, and then diffusion annealing for 4 hours at 750℃, 950℃ and 1150℃ respectively under 5 MPa pressure in vacuum.Ductile Ni layer in composites can greatly improve room-temperature fracture toughness bymicrocracks bridging and blunting. After annealing at 750℃ and 950℃, Al2O3 at the surface of Al foils before reaction remains at the interface of bilayer Ni2Al3 as inclusions, which makesinterface poorly bonded. But after annealing at 1150℃, Ni3Al layer is well-bonded with Ni and NiAl layer. So, the composites show significantly strain-hardening and plastic flow, its mean fracture strength and strain are 786 MPa and 12.8% respectively. Key words:  Ni-Al intermetallics      multilayer composite      in situ synthesis      Received:  18 April 1998      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/Y1998/V34/I4/431 1Rogachev A S, Varma A, Merzhanov A G Int J SHS, 1993 2: 25 2Rogachev A S, Khomenko I O, Uarma A, Merzhanov A G Int J SHS, 1994; 3: 239 3Rawers J C; Alman D E, Hawk J A. Int J SHS, 1993; 2: 12 [1] CHEN Fei, QIU Pengcheng, LIU Yang, SUN Bingbing, ZHAO Haisheng, SHEN Qiang. Microstructure and Mechanical Properties of NiTi Shape Memory Alloys by In Situ Laser Directed Energy Deposition[J]. 金属学报, 2023, 59(1): 180-190. [2] Hongxi LIU,Zhengxue LI,Xiaowei ZHANG,Jun TAN,Yehua JIANG. Effect of Heat Treatment on High-Temperature Oxidation Resistance of High Niobium Ti-Al Intermetallic Coating Fabricated by Laser In Situ Synthesis on Titanium Alloy[J]. 金属学报, 2017, 53(2): 201-210. [3] HU Na, XUE Lihong, GU Jian, LI Heping, YAN Youwei. OPTIMIZATION OF GRADING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Al13Fe4/Al COM- POSITES IN SITU SYNTHESIZED BY MECHANICAL ALLOYING AND SPARK PLASMA SINTERING[J]. 金属学报, 2015, 51(2): 216-222. [4] ZHANG Xiaowei LIU Hongxi JIANG Yehua WANG Chuanqi. LASER IN SITU SYNTHESIZED TiN/Ti3Al COMPOSITE COATINGS[J]. 金属学报, 2011, 47(8): 1086-1093. [5] CHEN Liqing; DONG Qun; GUO Jinhua; BI Jing; XU Yongbo. Compressive deformation behavior of TiC/AZ91Dcomposites at elevated temperatures[J]. 金属学报, 2005, 41(3): 326-332 . [6] ZHANG Laiqi;SUN Zuqing;ZHANG Yue;YANG Wangyue(State Key Laboratory of Advanced Metal Materials; University of Science & Technology Beijing; Beijing 100083). THERMODYNAMIC AND KINETIC ANALYSIS OF IN SITU SYNTHESIS OF MoSi_2-SiC COMPOSITE[J]. 金属学报, 1998, 34(11): 1205-1209. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed