纳米颗粒增强金属基复合材料温度相关性屈服强度理论表征模型

王翊霖; 李卫国; 麻建坐

doi:10.21656/1000-0887.460044

纳米颗粒增强金属基复合材料温度相关性屈服强度理论表征模型

doi: 10.21656/1000-0887.460044

王翊霖^1,,
李卫国^{1, 2, ,},
麻建坐³

1.
重庆大学航空航天学院，重庆 400044
2.
重庆大学煤矿灾害动力学与控制国家重点实验室，重庆 400044
3.
重庆工业职业技术学院机械工程学院，重庆 401120

(我刊编委李卫国来稿)

基金项目:

中央高校基本科研业务费 2024IAIS-ZD008

国家自然科学基金(面上项目) 12272073

详细信息

作者简介:
王翊霖(1999—)，男，硕士(E-mail: yilin08021999@163.com)

通讯作者:
李卫国(1976—)，男，教授，博士，博士生导师(通信作者. E-mail: wgli@cqu.edu.cn)

中图分类号: O341
计量
- 文章访问数: 102
- HTML全文浏览量: 50
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2025-03-06
- 修回日期: 2025-03-13
- 刊出日期: 2026-01-01

A Theoretical Characterization Model for Temperature-Dependent Yield Strengths of Metal Matrix Composites Reinforced With Nanoparticles

WANG Yilin^1
,,
LI Weiguo^{1, 2
, ,},
MA Jianzuo³

1.
College of Aerospace Engineering, Chongqing University, Chongqing 400044, P. R. China
2.
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P. R. China
3.
College of Mechanical Engineering and Automation, Chongqing Industry Polytechnic College, Chongqing 401120, P. R. China

(Contributed by LI Weiguo, M.AMM Editorial Board)

摘要

摘要: 通过定量表征宽温域下，各强化机制对纳米颗粒增强金属基复合材料(nanoparticle reinforced metal matrix composites，NRMMCs)的屈服强度以及晶界滑移对金属基体屈服强度的影响，建立了不含拟合参数的NRMMCs温度相关性屈服强度理论表征模型.模型仅需金属基体任意一个参考温度下的屈服强度及相关材料参数，如比热容、热膨胀系数、熔点等，即可预测NRMMCs在任意温度下的屈服强度.模型预测结果与目前获取到的四组所有实验数据均取得了良好的一致性，实现了对NRMMCs宽温域屈服强度的合理预测.在此基础上，探讨了主要强化机制对NRMMCs屈服强度的影响及其随温度和颗粒尺寸的演化规律，为设计和开发适用于宽温域下的NRMMCs提供了理论依据和有效建议.
- 纳米颗粒增强金属基复合材料 /
- 温度相关性 /
- 屈服强度 /
- 理论表征模型 /
- 强化机制
Abstract: Through quantitative characterization of the effects of various strengthening mechanisms on the yield strengths of nanoparticle-reinforced metal matrix composites (NRMMCs) within a wide temperature range, as well as the impacts of grain boundary sliding on the yield strength of the metal matrix, a theoretical characterization model for the temperature-dependent yield strengths of NRMMCs without fitting parameters was established. This model only requires the yield strength of the metal matrix at any one reference temperature and relevant material parameters such as the specific heat capacity, the thermal expansion coefficient, and the melting point, etc., to predict the yield strengths of the NRMMCs at any temperature. The predicted results of the model are in good agreement with all the 4 sets of experimental data currently available, achieving a reasonable prediction of the yield strengths of the NRMMCs within a wide temperature range. On this basis, the effects of the main strengthening mechanisms on the yield strengths of the NRMMCs and their evolution laws with the temperature and the particle size were discussed, to provide a theoretical basis and effective suggestions for the design and development of NRMMCs applicable to a wide temperature range.
- nanoparticle reinforced metal matrix composite /
- temperature dependence /
- yield strength /
- theoretical characterization model /
- reinforcement mechanism
edited-by

edited-by
注释:

1) (我刊编委李卫国来稿)

HTML全文

图 1 1.5vol%SiC增强铝基复合材料温度相关性屈服强度实验结果与模型计算结果对比

Figure 1. Comparison between the experimental results of the temperature dependent yield strength of 1.5vol%SiC reinforced aluminum matrix composites and the calculated results of the model

下载: 全尺寸图片幻灯片

图 2 3vol%SiC增强铝基复合材料温度相关性屈服强度实验结果与模型计算结果对比

Figure 2. Comparison between the experimental results of the temperature dependent yield strength of 3vol%SiC reinforced aluminum matrix composites and the calculated results of the model

下载: 全尺寸图片幻灯片

图 3 3.2vol%TiB₂增强2618Al温度相关性屈服强度实验结果与模型计算结果对比

注为了解释图中的颜色，读者可以参考本文的电子网页版本，后同.

Figure 3. Comparison between the experimental results of the 3.2vol%TiB₂ enhanced temperature-dependent yield strength of 2618Al and the calculated results of the model

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图 4 1.5vol%SiC增强铝基复合材料屈服强度的主要强化机制随温度的演化

Figure 4. The evolution of the primary strengthening mechanisms of the yield strength in 1.5vol%SiC reinforced aluminum matrix composites with temperature

下载: 全尺寸图片幻灯片

图 5 1.5vol%SiC增强铝基复合材料屈服强度的主要强化机制在屈服强度总增量中的占比随温度的演化

Figure 5. The evolution of the contribution of the primary strengthening mechanisms to the total increment of yield strength in 1.5vol%SiC reinforced aluminum matrix composites with temperature

下载: 全尺寸图片幻灯片

图 6 1.5vol%SiC增强铝基复合材料颗粒尺寸的改变对Orowan强化机制的影响及其随温度的演化

Figure 6. The effect of particle size variation on the Orowan strengthening mechanism in 1.5vol%SiC reinforced aluminum matrix composites and its evolution with temperature

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图 7 1.5vol%SiC增强铝基复合材料颗粒尺寸的改变对位错密度强化机制的影响及其随温度的演化

Figure 7. The effect of particle size variation on the dislocation density enhancement mechanism in 1.5vol%SiC reinforced aluminum matrix composites and its evolution with temperature

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图 8 1.5vol%SiC增强铝基复合材料颗粒尺寸的改变对应变梯度强化机制的影响及其随温度的演化

Figure 8. The effect of particle size variation on the strain gradient strengthening mechanism in 1.5vol%SiC reinforced aluminum matrix composites and its evolution with temperature

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表 1 预测不同温度环境下屈服强度所需的材料参数(铝合金的晶界能γ_gbs(T₀)为1.8 J/m²^[29])

Table 1. Material parameters used to predict the yield strength in different temperature environments (for aluminum alloy, grain boundary energy γ_gbs(T₀) is 1.8 J/m²^[29])

material parameter	1.5vol%SiC/Al	3vol%SiC/Al	3.2vol%TiB₂/2618Al	0.5vol%SiC_p/2014Al
σ_m(T₀)/MPa	237(T₀=298 K)^[30]	237(T₀=298 K)^[30]	306.5(T₀=298 K)^[31]	182(T₀=493 K)^[32]
T_m/K^[28]	933	933	933	933
ΔH_M/J^[28]	10 711	10 711	10 711	10 711
E_m(T₀)/GPa	55.5^[30]	55.5^[30]	75.7^[31]	－
υ_m^[31]	0.33	0.33	0.33	0.33
β(T₀)/(MPa·m^0.5)^[27]	0.06	0.06	0.06	0.06
d_c/μm	0.081^[30]	0.073^[30]	11.4^[31]	53^[32]
d_m/μm	0.099^[30]	0.099^[30]	42.6^[31]	122^[32]
d_p/nm	50^[30]	50^[30]	700^[31]	40^[32]
Burgers vector/nm^[33]	0.286	0.286	0.286	0.286
Δα/K^-1	1.73×10^-5^[33-34]	1.73×10^-5^[33-34]	1.62×10^-5^[31]	1.73×10^-5^[33-34]
T_process/K	773^[30]	773^[30]	778^[31]	653^[32]

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