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金属学报  2019, Vol. 55 Issue (1): 59-72    DOI: 10.11900/0412.1961.2018.00461
  本期目录 | 过刊浏览 |
非连续增强铝基复合材料的热变形行为研究进展
肖伯律(), 黄治冶, 马凯, 张星星, 马宗义
中国科学院金属研究所沈阳材料科学国家研究中心 沈阳 110016
Research on Hot Deformation Behaviors of Discontinuously Reinforced Aluminum Composites
Bolü XIAO(), Zhiye HUANG, Kai MA, Xingxing ZHANG, Zongyi MA
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
引用本文:

肖伯律, 黄治冶, 马凯, 张星星, 马宗义. 非连续增强铝基复合材料的热变形行为研究进展[J]. 金属学报, 2019, 55(1): 59-72.
Bolü XIAO, Zhiye HUANG, Kai MA, Xingxing ZHANG, Zongyi MA. Research on Hot Deformation Behaviors of Discontinuously Reinforced Aluminum Composites[J]. Acta Metall Sin, 2019, 55(1): 59-72.

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摘要: 

本文综述了非连续增强铝基复合材料的热变形行为理论研究方法,并描述了典型铝基复合材料的热变形机制和可加工性特征。对本构方程、加工图理论方法对流变行为和变形机制研究的可靠性进行了讨论,同时介绍了引入应变速率敏感指数和温度敏感指数作为基体合金变形机制演化辅助判据的方法。根据铝合金常见变形机制,讨论了不同类型增强体的铝基复合材料热加工变形行为特征。最后,对该领域未来的研究方向进行了展望。
关键词 ： 金属基复合材料,  热加工,  本构方程,  加工图,  变形机制    
Abstract：

This paper describes the research progress in hot deformation behaviors of discontinuously reinforced aluminum (DRA) composite, including research method, deformation mechanism and hot workability. The reliability of constitutive equation and processing map for description of flowing behaviors and deformation mechanisms in the previous studies were discussed. Based on that, the strain rate and temperature sensitivities of flow stress were introduced to further identify the deformation mechanisms. Deformation characteristics and microstructures of the composites with different reinforcements were illustrated. Finally, the future researches of hot deformation of DRA composite are suggested.
Key words： metal matrix composite    hot working    constitutive equation    processing map    deformation mechanism
收稿日期: 2018-10-08     
ZTFLH:  TB333  
基金资助:国家重点研发计划项目No.2017YFB0703104,国家自然科学基金委员会-辽宁省人民政府联合基金项目No.U1508216
作者简介:

作者简介 肖伯律,男,1975年生,研究员,博士
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https://www.ams.org.cn/CN/10.11900/0412.1961.2018.00461      或      https://www.ams.org.cn/CN/Y2019/V55/I1/59

Particle Volume Particle Matrix Preparation Temperature Strain rate Qa Ref.
fraction size alloy method range range kJmol-1
% μm ℃ s-1
Al2O3 10 20 6061Al SC 25~250 0.1~5 125 [44]
250~540 0.1~5 213
Al2O3 20 20 6061Al SC 25~250 0.1~5 207 [45]
250~540 0.1~5 245
Al2O3 20 20 6061Al SC 350~500 0.001~0.1 155 [46]
Al2O3 20 15 2014Al SC 300~500 0.01~1 227 [47]
B4C 15 23 Pure Al SC 300~500 0.001~1 186.4 [48]
B4C 15 23 Al-0.4Sc SC 300~500 0.001~1 196.1 [48]
B4C 15 23 Al-0.4Sc-0.24Zr SC 300~500 0.001~1 206.6 [48]
SiCp 30 3.5 2024Al PM 350~500 0.01~10 272.8 [49]
表1  不同DRA复合材料的热加工表观变形激活能对比[44,45,46,47,48,49]
图1  铝合金弹性模量随温度变化的经验公式与实测值对比
图2  2.0%CNT/2024Al (质量分数)复合材料的三维加工图[74]
图3  14%SiCp/2014Al (体积分数)复合材料的应变速率敏感指数(m)图与加工图及其预测的流变失稳区域中的试样损伤[9]
图4  14%SiCp/2014Al (体积分数)复合材料在应变量0.8时的温度敏感指数(s)图[9]
图5  17%SiCp/2009Al (体积分数)复合材料在压缩变形后(ε =0.7)剪切变形区的电子背散射(EBSD)图
图6  17%SiCp/2009Al (体积分数)复合材料压缩变形后(ε =0.7)压缩变形区的TEM像
图7  轧制前后的1.5%CNT/2009Al (体积分数)复合材料中的CNT形态[117]
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