Enhanced Interfacial Bonding Properties in Non-Equilibrium State between Aluminum Matrix and Ultrafined Ni-Nb Glassy Particulate Reinforcements
In this paper, highly scattered fine-scale Ni-Nb base glassy particles were successfully produced by wet milling method.The Al-based metal matrix composites (MMC) comprising pure Al matrix and different amounts of Ni-Nb glassy powder reinforcement were fabricated by powder metallurgy, and their mechanical properties were examined by compression tests at room temperature.Its proved that only the 2.5 to 5 wt.% addition of the glassy reinforcements enhanced significantly the yield strength of pure Al from 120 to near 200 MPa, while keeping considerable plastic deformation before the fracture strain at about 25%.These results showed that the highly scattered fine-scale glassy particles were efficient reinforcements in fabricating high-performance Al based MMC.The high yield strength of such composites blended with the low mass fraction of glassy particulates was roughly analyzed using Orowan shear model.Finally, the ductile fracture characteristics of the composites were analyzed by evaluating the Ni-Nb glassy/Al metallic interface energy.
Nano-scale glassy particles Al based metal matrix composites Mechanical properties Interface energy
Da-peng Wang Xing-hao Du Bao-Lin Wu Yan-Dong Liu
School of Materials Science and Engineering, Shenyang Aerospace University,Shenyang 110136, P.R.Chin School of Materials and Metallurgy, Northeastern University, Shenyang 110819, P.R.China
国际会议
The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)
重庆
英文
218-223
2016-07-25（万方平台首次上网日期，不代表论文的发表时间）