基于Archard磨损模型研究SiC/AZ91D复合材料干摩擦磨损特性

付豪; 尧军平; 梁超群; 李步炜; 陈国鑫

基于Archard磨损模型研究SiC/AZ91D复合材料干摩擦磨损特性

南昌航空大学　航空制造工程学院, 南昌 330063

基金项目: 国家自然科学基金资助(52065046；51661024)；江西省科技重点研发计划(20202BBEL53024)；研究生创新专项资金项目(2030009101050)

详细信息

通讯作者:
尧军平，博士研究生，教授，研究方向为金属基复合材料　E-mail：yyyjpsz@126.com

中图分类号: TB333
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出版历程
- 收稿日期: 2023-12-27
- 修回日期: 2024-02-26
- 录用日期: 2024-03-07
- 网络出版日期: 2024-04-09
- 刊出日期: 2024-11-15

Research on dry friction and wear characteristics of SiC/AZ91D composites based on Archard wear mode

School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China

Funds: Supported by the National Natural Science Foundation of China (52065046; 51661024); Jiangxi key research and development plan (20202BBEL53024); Graduate student innovation special fund project (2030009101050)

摘要

摘要: 颗粒增强镁基复合材料在活塞制造中具有重要意义，活塞使用寿命与其材料的摩擦磨损性能关系密切，为预测镁基复合材料活塞耐磨性。基于Archard磨损模型结合自适应网格技术，建立SiC/AZ91D镁基复合材料及其基体有限元模型，探究其在不同载荷下的磨损行为，考察其应力场分布、磨损深度，进行了试验验证，揭示磨损机理。结果表明：在不同载荷下，盘销的接触面均表现出距盘轴心最近与最远处应力值较大，其它径向区域较小。随着载荷增加，盘销接触区域各处均表现出应力值增大。在不同载荷下，盘销接触面均表现出距盘轴心最近处磨损深度较小，离盘轴心径向距离增加，磨损深度越来越大。随着载荷增加，盘销接触区域各处均表现出磨损深度数值增大。但复合材料的磨损深度小于基体，表现出较好的耐磨性能。磨粒磨损和剥层磨损为复合材料主要磨损机制，粘着磨损为基体合金的主要磨损机理，模拟结果与试验结果吻合较好。
- 镁基复合材料 /
- 有限元模拟 /
- 摩擦磨损 /
- Archard磨损模型
Abstract: The particle reinforced magnesium matrix composite is of great significance in the manufacture of piston. The service life of piston is closely related to the friction and wear properties of the material, so it can predict the wear resistance of magnesium matrix composite piston. Based on Archard wear model and adaptive mesh technology, a finite element model of SiC/AZ91D magnesium matrix composite and its matrix was established to explore its wear behavior under different loads, investigate its stress field distribution and wear depth, and conduct experimental verification to reveal the wear mechanism. The results show that, under different loads, the stress values of the nearest and furthest distance from the disc axis are larger on the contact surface of the disc pin, while other radial regions are smaller. With the increase of load, the stress values in all parts of the disc and pin contact area increase. Under different loads, the wear depth of the contact surface of the disc pin is smaller at the closest point to the disc axis, and the wear depth is larger and larger with the increase of the radial distance from the disc axis. With the increase of load, the wear depth increases in all parts of the disc and pin contact area. However, the wear depth of the composite is less than that of the matrix, which shows better wear resistance. Abrasive wear and peeling wear are the main wear mechanisms of the composite, adhesive wear is the main wear mechanism of the matrix alloy, and the simulation results are in good agreement with the experimental results.
- magnesium matrix composite material /
- finite element simulation /
- friction and wear /
- Archard's law of wear

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图 1 摩擦实验机(a)与试样图(b)

Figure 1. Friction testing machine and samples drawing

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图 2 SiC/AZ91D光学显微组织图

Figure 2. Optical microstructure of Sic/AZ91D

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图 3 模型边界条件及其网格划分

Figure 3. Model boundary conditions and mesh division

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图 4 不同载荷下SiC/AZ91D试样Von Mises应力分布：(a) 10 N；(b)6 N；(c)3 N

Figure 4. Von Mises stress distribution of SiC/AZ91D samples under different loads: (a) 10 N; (b)6 N; (c)3 N

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图 5 不同载荷下AZ91D试样Von Mises应力分布：(a) 10 N；(b) 6 N；(c) 3 N

Figure 5. Von Mises stress distribution of AZ91D samples under different loads: (a) 10 N; (b)6 N; (c)3 N

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图 6 不同载荷下SiC/AZ91D(a)与AZ91D(b)试样的磨损深度与径向距离关系

Figure 6. Relationship between wear depth and radial distance of SiC/AZ91D (a) and AZ91D (b) samples under different loads

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图 7 不同载荷下SiC/AZ91D(a)与AZ91D(b)试样的摩擦系数与磨损时间关系

Figure 7. Relationship between friction coefficient and wear time of SiC/AZ91D (a) andAZ91D (b) samples under different loads

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图 8 SiC/AZ91D复合材料与AZ91D基体平均摩擦系数与载荷关系

Figure 8. Average friction coefficient and load relationship between SiC/AZ91D composite material and AZ91D matrix

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图 9 10 N载荷下SiC/AZ91D复合材料(a)与AZ91D基体(b)摩擦磨损面SEM图像

Figure 9. SEM image of friction and wear surface between SiC/AZ91D composite and AZ91D matrix under 10 N load

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图 10 SiC/AZ91D复合材料与AZ91D基体磨损轮廓三维效果图

Figure 10. 3 D rendering of wear profile between SiC/AZ91D composite and AZ91D matrix

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图 11 相同载荷下SiC/AZ91D复合材料与AZ91D基体磨损深度模拟与实验对比

Figure 11. Comparison of simulated and experimental wear depth between SiC/AZ91D composite and AZ91D matrix under the same load

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表 1 材料的基本参数

Table 1. Basic parameters of the materials

Material	$ \rho $/(kg·m⁻³)	$ \sigma_{\mathrm{S}} $/MPa	$ \mu $	E/MPa	H_B
GCr15	7.18	518.5	0.3	20800	248
SiC/AZ91D	1.84	204	0.35	62000	65
AZ91D	1.82	160	0.3	44800	58
Notes: $ \rho $ is the material density; E is the modulus of elasticity; $ \mu $ is Poisson's ratio; $ \sigma_{\mathrm{S}} $ is the yield strength; H_B is Brinell hardness number.

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表 2 实验条件

Table 2. Experiment condition

No.	Load/N	Rtation speed/ (rad·min⁻¹)	Time/min	Material
1	3	200	20	SiC/AZ91D
2	6	200	20	SiC/AZ91D
3	10	200	20	SiC/AZ91D
4	3	200	20	AZ91D
5	6	200	20	AZ91D
6	10	200	20	AZ91D

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