Surface integrity enhancement of austenitic stainless steel treated by ultrasonic burnishing with two burnishing tips
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(2020) 20:79
ORIGINAL ARTICLE
Surface integrity enhancement of austenitic stainless steel treated by ultrasonic burnishing with two burnishing tips Ya‑Long Shi1,2 · Xue‑Hui Shen1,2 · Guo‑Feng Xu1 · Chong‑Hai Xu1 · Bao‑Lin Wang1 · Guo‑Sheng Su1 Received: 12 February 2020 / Revised: 30 April 2020 / Accepted: 28 May 2020 © Wroclaw University of Science and Technology 2020
Abstract A set of ultrasonic burnishing equipment with two different burnishing tips was designed and manufactured, with which a series of experiments were performed to explore the effects of process parameters and burnishing tips on the surface integrity of austenitic stainless steel material being treated by ultrasonic burnishing (UB). Based on the experiment data, the two surface treatments, i.e. UB with ball tip and UB with roller tip, were comparatively assessed together with the other two surface machining methods of fine turning and grinding. As a further study, a microscopic FE model was built to investigate the three-dimensional transient stress and strain field inside the being treated material. It was found that parameter combination is determinative to surface finishing in UB process, and static pressure and burnishing pass are supposed to be the two most significant parameters for surface integrity of the treated sample. On the whole, roller tip is more preferable to achieve good surface enhancement than ball tip. The superposition of ultrasonic vibration leads to the dynamic change of the stress and strain field in UB, resulting in the oscillating propagation of stress wave inside the material, which gives explanation for the good performance of UB than that of conventional burnishing without ultrasonic. Keywords Severe plastic deformation · Surface integrity · Ultrasonic burnishing · Surface strengthening
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s43452-020-00074-6) contains supplementary material, which is available to authorized users. * Xue‑Hui Shen [email protected] Ya‑Long Shi [email protected] Guo‑Feng Xu [email protected] Chong‑Hai Xu [email protected] Bao‑Lin Wang [email protected] Guo‑Sheng Su [email protected] 1
School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 Daxue Road, Jinan 250353, Shandong Province, People’s Republic of China
Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), No. 28789 East Jingshi Road, Jinan 250103, Shandong Province, People’s Republic of China
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1 Introduction Austenitic stainless steel has become more and more popular due to its non-magnetic and good welding performance, and has been widely developed in automotive, aerospace and other fields. As austenitic stainless steel is not suitable to be strengthened by quenching, many severe plastic deformation (SPD) technologies have been utilized to improve the hardness and other surface characteristics of this material [1]. The surface severe plastic deformation (SSPD) technology was f
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