Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions

Yang, Zhiliang; Sun, Yu; Li, Xinxing; Wang, Shuqi; Taojie, Mao

doi:10.1007/s12598-015-0504-7

Cited by 23 publications

(9 citation statements)

References 16 publications

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“…From Figure 7, it can be seen that the wear depth of the composite did not increase exponentially at the higher temperatures. Thus, we can have deduced that the formation of the MML at a temperature over 200 °C could improve the wear resistance of the composite [30,31]. Figure 7 shows the cross-sectional EPMA analysis of the wear test specimen from room temperature to 300 • C. As confirmed from Figure 7, the wear of the composite with the breakage of the 40 µm B 4 C particles occurred at room temperature and 100 • C due to the stress concentration.…”

Section: Resultsmentioning

confidence: 74%

“…The MML formed with a thickness of about 5 µm at 200 • C, and the thickness of the MML was approximately 13 µm at 300 • C. From Figure 7, it can be seen that the wear depth of the composite did not increase exponentially at the higher temperatures. Thus, we can have deduced that the formation of the MML at a temperature over 200 • C could improve the wear resistance of the composite [30,31].…”

Section: Resultsmentioning

confidence: 93%

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High Temperature Mechanical Properties and Wear Performance of B4C/Al7075 Metal Matrix Composites

Shin

Lee

et al. 2019

Metals

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In this study, high volume fraction B 4 C reinforced Al matrix composites were fabricated with a liquid pressing process. Microstructural analysis by scanning electron microscope and a transmission electron microscopy shows a uniform distribution of the B 4 C reinforcement in the matrix, without any defects such as pore and unwanted reaction products. The compressive strength and wear properties of the Al7075 matrix and the composite were compared at room temperature, 100, 200, and 300 • C, respectively. The B 4 C reinforced composite showed a very high ultimate compression strength (UCS) over 1.4 GPa at room temperature. The UCS gradually decreased as the temperature was increased, and the UCS of the composite at 300 • C was about one third of the UCS of the composite at room temperature. The fractography of the compressive test specimen revealed that the fracture mechanism of the composites was the brittle fracture mode at room temperature during the compression test. However, at the elevated temperature, AMCs had a mixed mode of a brittle and ductile fracture mechanism under the compressive load. The composite produced by a liquid pressing process also showed superior wear resistance compared with the Al matrix. The result of the wear test indicates that the wear loss of the Al matrix at 300 • C was two times higher than that of the AMCs, which is attributed to the formation of a mechanically mixed layer (MML) in the composites at the high temperature.

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Section: Resultsmentioning

confidence: 74%

Section: Resultsmentioning

confidence: 93%

High Temperature Mechanical Properties and Wear Performance of B4C/Al7075 Metal Matrix Composites

Shin

Lee

et al. 2019

Metals

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“…Among other aluminum alloys, Al 7075 has owing the high strength and greater potential in dry sliding wear applications [8][9]. A numerous amount of research work [10][11][12] has been done to study the wear behavior of Al 7075 alloy reinforced with various ceramic reinforcements like silicon carbide (SiC), titanium carbide (TiC), alumina (Al 2 O 3 ), graphite (Gr), titanium boride (TiB 2 ), etc. An investigation has been conducted on the effect of SiC and its particle size of Al 7075-SiC composites and observed that a signi cant enhancement in mechanical and tribological properties of the composite when to compare with base material [13].…”

Section: Introductionmentioning

confidence: 99%

Wear and Frictional Behaviour of Al 7075/FA/SiC Hybrid MMC’s Using Response Surface Methodology

Mandava

Reddy

Rao³

et al. 2021

Silicon

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In the present research work an effort has been made to study the wear and frictional behavior of Aluminium Metal Matrix composite (Al 7075 as a base alloy and y ash (FA) and silicon carbide (SiC) as reinforcements) by using the stir casting method. To carry out this work, the wt. % of reinforcements FA (2.5%, 5%, 7.5% and 10%) and SiC (2.5%, 5%, 7.5% and 10%)have been used 5%, 10%, 15% and 20%.Initially, the mechanical studies have been conducted and the best mechanical properties obtained at 20 wt. % of FA and SiC. Later on, the composite was fabricated by 20 wt. % of FA, SiC reinforcements are used to check the wear and frictional behavior on a pin-on-disc machine at the dry condition. The dry sliding wear behavior was carried out at various input parameters such as applied force (10N, 20N, and 30N), sliding velocity (1.5m/s, 3m/s, and 4.5m/s), and sliding distance (1000 m, 2000 m, and 3000 m).Further, a scanning electron microscope (SEM) are used to observe the mixing of reinforcements and examine the worn surfaces. A response surface methodology (RSM) is the reasonable and accurate method for conducting the experiments and identifying the optimal wear parameters. Moreover, the RSM was helped to identify the most signi cant factor, which was the in uence on the wear rate. Finally, it is decided that the applying force is the utmost signi cant factor that leaves an effect on wear rate. The sliding velocity and distance are acting as the lesser in uence on the performance indicator.

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“…Nowadays, the researchers in automotive and aerospace fields are eager to develop high-performance structural metals, in which lightweight alloys become an important choice for such applications [ 1 ]. Aluminum (Al) and its alloys are widely used due to their high strength, good formability, and corrosion resistance [ 2 , 3 , 4 , 5 , 6 ]. To meet the increasing toughness requirements of structural materials, severe plastic deformation (SPD) technology is introduced to greatly improve the strength of materials [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Properties of Pure Aluminum upon Multi-Pass Caliber Rolling

Guo

Wang

et al. 2022

Materials

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The paper presents the microstructure and mechanical property of pure aluminum (Al) fabricated by multi-pass caliber rolling at room temperature. The finite element modeling (FEM) simulation was performed to explore the changes in rolling force, effective stress and strain, and temperature under various rolling passes. As the number of rolling passes increased, the overall temperature, effective stress, and strain gradually increased, while the maximum rolling force decreased. In addition, due to the dynamic recrystallization (DRX), the average grain size reduced from 1 mm to 14 µm with the increase in rolling passes. The dislocation density increased and it gradually evolved into the high-angle grain boundaries (HAGBs). Moreover, the initial cubic texture rotated to the brass component and finally changed to a mixture of Cube and Brass types. The highest tensile yield strength (TYS), ultimate tensile strength (UTS) and elongation (El.) of caliber rolled pure Al (116 MPa, 135 MPa, and 17%, respectively) can be achieved after 13 rolling passes, which mainly attributed to grain refinement.

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Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions

Cited by 23 publications

References 16 publications

High Temperature Mechanical Properties and Wear Performance of B4C/Al7075 Metal Matrix Composites

High Temperature Mechanical Properties and Wear Performance of B4C/Al7075 Metal Matrix Composites

Wear and Frictional Behaviour of Al 7075/FA/SiC Hybrid MMC’s Using Response Surface Methodology

Microstructural Evolution and Mechanical Properties of Pure Aluminum upon Multi-Pass Caliber Rolling

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