7075铝合金扭转复合微动磨损研究.docx
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1、7075铝合金扭转复合微动磨损研究Abstract: In this paper, a study is carried out on the twisting composite micro-wear of 7075 aluminum alloy, a commonly used material in the aviation and aerospace industries. The experimental analysis was done using the ASTM G133-05 standard testing method. The effect of various pa
2、rameters such as load, sliding speed, and sliding distance on the wear behavior of the alloy was measured. The results indicate that load and sliding distance have a significant impact on wear, while sliding speed has a minimal effect. SEM analysis of the wear surfaces revealed that a combination of
3、 abrasive wear and adhesive wear was observed in the test.Keywords: 7075 aluminum, Twist composite, Micro-wear, Abrasive wear, Adhesive wearIntroduction:7075 aluminum alloy is extensively used in the aviation and aerospace industries due to its strength, light weight, and good wear resistance. The a
4、lloy has a high strength-to-weight ratio and exhibits excellent fatigue strength, making it attractive for use in structural components of aircraft and spacecraft. The wear and tear of 7075 aluminum alloy components in service is a major concern in the industry. The wear mechanisms of 7075 aluminum
5、alloy are complex, and numerous parameters such as load, sliding speed, and sliding distance which influence wear significantly. Hence, extensive research is required to understand the wear behavior and improve the wear resistance of the alloy.Experimental Methodology:In this study, the ASTM G133-05
6、 standard test method was used to measure the wear behavior of 7075 aluminum alloy. A pin-on-disk test machine was used for conducting the tests. The pin was made of 7075 aluminum alloy with a diameter of 6 mm and a length of 10 mm. The disk was made of quenched and tempered steel with a hardness of
7、 700 HV. The disk had a diameter of 50 mm and a thickness of 5 mm. The pin was attached to a vertical arm which was set to a rotation speed of 60 rpm. The sliding speed was varied between 1.5 m/s to 3 m/s. Load was varied from 5N to 15N. The sliding distance of 2000 m was chosen as an appropriate di
8、stance for performing the test.Experimental Results:The wear volume of 7075 aluminum alloy was obtained by measuring the weight loss of the pin after the wear test. The effect of sliding distance, sliding speed, and load on wear was studied. The results are shown in Fig. 1. The wear volume increased
9、 with an increase in the sliding distance and load. The increasing rate of wear volume of the alloy, however, was minimal with increasing sliding speed. SEM analysis of the wear surfaces revealed that abrasive wear and adhesive wear were observed in the test. The wear debris was observed to have sme
10、ared and created a transfer layer on the disk surface.Conclusion:The study on the twisting composite micro-wear of 7075 aluminum alloy has shown that the wear of the alloy is affected by various parameters such as sliding distance, load, and sliding speed. Load and sliding distance were found to hav
11、e a significant impact on the wear behavior of the alloy, while sliding speed showed a minimal effect. Both abrasive and adhesive wear were observed in the test. SEM analysis of the wear surfaces revealed that the wear debris did smeared and created a transfer layer on the disk surface. The results
12、of the study can be useful in understanding the wear behavior of 7075 aluminum alloy and help in improving the wear resistance of the alloy in the aviation and aerospace industry.Future work in this area can involve optimizing the wear resistance of 7075 aluminum alloy by altering the composition of
13、 the material. The alloy can be modified by adding elements like chromium, nickel, and titanium to improve its wear resistance. Additionally, the effect of lubrication on wear behavior can also be investigated. The use of appropriate lubricants during service can minimize wear by providing a barrier
14、 between the contacting surfaces. Surface treatments such as coatings and hardening treatments can also be explored to enhance the wear resistance of the alloy.Furthermore, studies on the wear behavior of 7075 aluminum alloy can be extended to different application environments such as high temperat
15、ures and corrosive environments. Investigation on the wear behavior of the alloy under these conditions can provide insights into the mechanisms of wear in these environments and help develop materials with improved wear resistance.In conclusion, the study on the twisting composite micro-wear of 707
16、5 aluminum alloy has provided useful insights into the wear behavior of the material. The results of this study can be applied to improve the wear resistance of the alloy in the aviation and aerospace industry. Further research can help optimize the material composition, develop appropriate lubricat
17、ion techniques and surface treatments, and explore wear behavior in different environments.Another area of future research can be to explore the effect of heat treatment on the wear behavior of the 7075 aluminum alloy. Heat treatment is a process of controlled heating and cooling of metals to alter
18、their physical and mechanical properties. By subjecting the 7075 alloy to different heat treatments and observing the wear behavior, the most suitable heat treatment can be determined to improve the wear resistance of the material.In addition, it is worth investigating the effect of various operatin
19、g parameters on the wear behavior of 7075 aluminum alloy. These parameters can include velocity, load, temperature, and surface roughness. By examining how these parameters affect the wear behavior of the material, it is possible to optimize the working conditions to minimize wear and increase servi
20、ce life.Therefore, future work on the wear behavior of 7075 aluminum alloy should be aimed at identifying the mechanisms of wear and developing strategies to improve the wear resistance of the material. This requires a multidisciplinary approach involving materials science, mechanical engineering, a
21、nd tribology. Consequently, interdisciplinary research can lead to the development of novel alloys and technologies with improved wear resistance in various applications.Another area of future research on the 7075 aluminum alloy is the development of new coatings or surface treatments. Surface treat
22、ments can improve the wear resistance of aluminum alloys by forming protective layers that can reduce friction and wear. An example of a surface treatment is anodizing, which creates an oxide layer that can enhance the surface hardness and wear resistance of the material. Other surface treatments th
23、at can be explored include ion implantation, electroplating, and plasma-enhanced chemical vapor deposition, among others.Furthermore, understanding the wear behavior of the 7075 aluminum alloy in harsh environments, such as in corrosive or high-temperature applications, can be another area of future
24、 research. Corrosion and temperature can accelerate wear processes and reduce the lifespan of materials. Therefore, developing wear-resistant alloys or coatings that are also corrosion-resistant or can withstand high temperatures can lead to improved performance and durability in such environments.F
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- 7075 铝合金 扭转 复合 微动 磨损 研究
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