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Deformation Behavior and Formability of Gradient Nano-grained AISI 304 Stainless Steel Processed by Ultrasonic Impact Treatment杨新俊1,LING Xiang2,WANG Dongxiang1,王伟3,4,51. Jiangsu Key Laboratory... test and small punch test(SPT). The GNG top layer was fabricated on coarse grains(CG) AISI 304 by ultrasonic impact treatment. The results showed that the CG substrate could effectively suppress......
was applied. To gain insight into the mechanism of ultrasonic treatment which affected the microstructure of the alloy, numerical simulations were carried out and the effects of different ultrasonic... are subjected to different acoustic pressures and the effect of grain refinement by ultrasonic treatment for these samples is different. With the increase of ultrasonic intensity, the acoustic pressure......
Effect of ultrasonic micro-forging treatment on microstructure and mechanical properties of GH3039 superalloy processed by directed energy depositionQingqing Li1,Yong Zhang1,Jie Chen1,2,Bugao... Engineering,Nanchang University摘 要:In this work, ultrasonic micro-forging treatment(UMFT) was introduced to achieve homogeneous microstructure, reduce defects......
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in the mechanical properties was achieved after rheocasting. There are not as many published researches on ultrasonic treatment of magnesium alloys as on aluminium alloys. LIU et al [12] and GAO et al [13] studied the effect of ultrasonic power on the microstructure and mechanical properties of AZ91 magnesium alloy. These investigations showed that ultrasonic treatment resulted in formation of fine non......
cycle to achieve a wide range of cooling profiles not readily achievable with quenchants and more traditional agitation systems currently in use. 关键词:heat treatment; agitation uniformity; ultrasonic... steel cracking. Quenching with ultrasonic agitation or in the presence of electrical and magnetic fields provide uniform agitation leading to improved uniformity of the stress fields within the metal......
Trans. Nonferrous Met. Soc. China 24(2014) 76-81 Effects of ultrasonic treatment on microstructures of AZ91 alloy Yue-shuang YANG1, Jin-cheng WANG1, Tao WANG1, Cheng-ming LIU1, Zhong-ming ZHANG2 1...’an 710048, China Received 23 October 2012; accepted 15 March 2013 Abstract: Effects of ultrasonic treatment on microstructures were investigated by introducing the ultrasonic oscillation into AZ91 alloy......
Trans. Nonferrous Met. Soc. China 26(2016) 1826-1834 Effects of ultrasonic treatment on microstructure and mechanical properties of Mg-6Zn-0.5Y-2Sn alloy Han-song XUE1,2, Zhi-hui XING1, Wei-na ZHANG1... University, Chongqing 400044, China Received 14 July 2015; accepted 19 October 2015 Abstract: The effects of the ultrasonic treatment on the microstructure and mechanical properties of Mg-6Zn-0.5Y-2Sn......
refining mechanism should be attributed to the inoculated Al-C and Al-C/Al-Mn-(Fe) nuclei. Ultrasonic treatment can enhance the grain refining efficiency of limestone particles through cavitation-enhanced nucleation mechanism. Key words: AZ31 magnesium alloy; grain refinement; limestone ore; microstructure; ultrasonic treatment 1 Introduction Mg-Al alloys should be the most commercially used, because......
Microstructural Analysis of Ultrasonic Welded AA6061 by Electron Backscattered Diffraction () 摘要:Ultrasonic welding can be used to join plastic and metal through high-frequency (more than 20 kHz) acoustic vibrations. Aluminium alloy is widely used in electronics, automotive and aerospace. The mechanical vibrations used during ultrasonic metal welding are introduced horizontally. During......
