Surface Formation Mechanics and its Microstructural Characteristics of AAJP of Aluminum Alloy by Using Amino Thermosetti
- PDF / 9,400,544 Bytes
- 14 Pages / 595.276 x 790.866 pts Page_size
- 29 Downloads / 182 Views
Online ISSN 2198-0810 Print ISSN 2288-6206
REGULAR PAPER
Surface Formation Mechanics and its Microstructural Characteristics of AAJP of Aluminum Alloy by Using Amino Thermosetting Plastic Abrasive Yan song Zhu1,2,3,4 · Jun Wu1 · Wen zhuang Lu2 · Dun wen Zuo2 · He ping Xiao3 · Da wei Cao3 · Tae Jo Ko4 Received: 2 March 2020 / Revised: 24 October 2020 / Accepted: 27 October 2020 © Korean Society for Precision Engineering 2020
Abstract In this study, a two-dimensional model according to the microcutting mechanism of abrasive particle was developed to demonstrate the mechanics of surface formation of the abrasive air jet polishing (AAJP) of aluminum alloy using amino thermosetting plastic (ATP) abrasive. It is shown that due to the characteristics of medium hardness and angular shape of ATP particle, the impacted surface can be generated by particle sliding, ploughing, microcutting, and indentation with the impinging angle increasing from 0º to 90º. Moreover, the effects of particle impacting on the surface microstructural characteristics, especially residual stress, have been analyzed. It has been found that, compared with particle ploughing and sliding processes, particle microcutting and indentation processes have an obvious effect on the surface residual stress; furthermore, particle microcutting process that can cause the impacted surface with high material deformation and ductility is more beneficial for improving the compressive residual stress than particle indentation process. The results of the study are expected to be applied to improve the fatigue performance of integral and large aircraft structures made of aluminum alloy or other metal materials. Keywords Abrasive air jet polishing · Amino thermosetting plastic particles · Aluminum alloy · Surface residual stress · XRD
1 Introduction Aluminum alloy, as one of the light structural materials, is widely used in the integral and large aircraft structures. Meanwhile, in the aerospace industry, surface finishing of the integral and large aircraft structures needs to be done * Yan song Zhu [email protected] * Tae Jo Ko [email protected] 1
School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001, China
2
Jiangsu Key Laboratory of Precision and Micro‑Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
3
Changzhou Joel Plastic Co., Ltd., Changzhou 213373, China
4
School of Mechanical Engineering, Yeungnam University, 280 Daehak‑ro, Gyoungsan‑si, Gyeongsangbuk‑do 38541, Republic of Korea
after their milling process. However, due to the large size and complex structure, the surface finishing of aircraft structures is very difficult. Li et al. [1] pointed out that due to the distinct advantages of abrasive air jet (AAJ) method, such as small cutting forces, high flexibility, negligible thermal effect, and high machining versatility, AAJ is suitable for the surface polishing of large and complex integral components. However, until recent years, that using AAJ for poli
Data Loading...
