硅酸铝短纤维增强AZ91D镁基复合材料蠕变力学行为的微观数值模拟

田君; 陈洲泉; 钟守炎

doi:10.3879/j.issn.1000-0887.2014.05.006

硅酸铝短纤维增强AZ91D镁基复合材料蠕变力学行为的微观数值模拟

doi: 10.3879/j.issn.1000-0887.2014.05.006

¹东莞理工学院机械工程学院,广东东莞 523808;²华南理工大学材料科学与工程学院,广州 510640

基金项目: 广东省自然科学基金（10151170003000002）

详细信息

作者简介:
田君（1968—），男，湖南人，副教授，博士，硕士生导师(通讯作者. Tel: +86-769-22861281; E-mail: 841608534@qq.com)

中图分类号: O346;TG113
计量
- 文章访问数: 1175
- HTML全文浏览量: 118
- PDF下载量: 845
- 被引次数: 0
出版历程
- 收稿日期: 2013-06-17
- 修回日期: 2014-03-21
- 刊出日期: 2014-05-15

Micro Numerical Simulation of Creep Mechanical Behavior of Aluminum Silicate Short Fiber-Reinforced AZ91D Magnesium Matrix Composite

¹School of Mechanical Engineering, Dongguan University of Technology, Dongguan, Guangdong 523808, P.R.China;²School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P.R.China

摘要

摘要: 研究了硅酸铝短纤维增强AZ91D镁基复合材料蠕变力学行为的细观机理，采用单胞模型结合有限元软件ABAQUS进行分析.有限元分析表明，纤维和基体中的应力应变大致为分段均匀分布，纤维远比基体承担的等效Mises应力大，基体和纤维的界面处存在较大的应力集中.复合材料的蠕变断裂经历3个微观进程，随着蠕变变形的增大，短纤维通过多处损伤、断裂和多重断裂来承担和传递载荷而加强了基体的蠕变抗力，弱界面产生的微裂纹不断扩大导致复合材料抗蠕变能力急剧下降而断裂.
- 镁基复合材料 /
- 单胞模型 /
- 有限元 /
- 蠕变断裂 /
- 轴应力
Abstract: A research was conducted on the micro mechanism of the creep mechanical behavior of aluminum silicate short fiber-reinforced AZ91D magnesium matrix composite. The unit cell model was applied together with the finite element method (FEM) of ABAQUS to simulate the composite. The FEM results show that the distribution of stress and strain in the fiber and matrix is roughly uniform in each segment, the fiber assumes far higher equivalent Mises stress than the matrix, and there is distinct stress concentration around the interface between the matrix and the fiber. The creep fracture of the composite goes through three microscopic processes. With the increase of creep deformation, the short fiber bears and transfers the load with various damages, fracture and multiple fracture, which strengthens the creep resistance of the matrix. The micro-cracks generated at the weak interface continue to expand, causing sharp fall of the creep resistance and in turn fracture of the composite.
- magnesium matrix composite /
- unit cell model /
- finite element method /
- creep fracture /
- axial stress

HTML全文

参考文献(23)

[1]	Aghion E, Bronfin B. Magnesium alloys development towards the 21st century[J].Materials Science Forum,2000,350/351: 19-28.
[2]	田君, 李文芳, 韩利发, 彭继华, 刘刚. 镁基复合材料的研究现状及发展[J]. 材料导报, 2009,23(9): 71-74.（TIAN Jun, LI Wen-fang, HAN Li-fa, PENG Ji-hua, LIU Gang. Research and development of magnesium matrix composites[J].Materials Review,2009,23(9): 71-74.（in Chinese））
[3]	Dragone T L, Nix W D. Geometric factors affecting the internal stress distribution and high temperature creep rate of discontinuous fiber reinforced metals[J].Acta Metallurgica et Materialia,1990,38(10): 1941-1953.
[4]	Dong M, Schmander S. Transverse mechanical behavior of fiber reinforced composites—FE modeling with embedded cell models[J].Computational Materials Science,1996,5(1/3): 53-66.
[5]	Reynaud P, Rouby D, Fantozzi G. Effects of temperature and of oxidation on the interfacial shear stress between fibers and matrix in ceramic-matrix composites[J].Acta Materialia,1998,46(7): 2461-2469.
[6]	Li Y, Landon T G. High strain rate superplasticity in metal matrix composites: the role of load transfer[J].Acta Materialia,1998,46(11): 3937-3948.
[7]	范赋群, 王震鸣, 嵇醒, 黄小清. 关于复合材料力学几个基本问题的研究[J]. 华南理工大学学报(自然科学版), 1995,23（4）: 1-6.（FAN Fu-qun, WANG Zhen-ming, JI Xing, HUANG Xiao-qing. Study of several basic problems on mechanics of composites[J].Journal of South China University of Technology(Natural Science),1995,23（4）: 1-6.（in Chinese））
[8]	杜善义, 王彪. 复合材料细观力学[M]. 北京: 科学出版社, 1998: 118-137.(DU Shan-yi, WANG Biao.Composite Micromechanics[M]. Beijing: Science Press, 1998: 118-137.(in Chinese))
[9]	方岱宁, 周储伟. 有限元计算细观力学对复合材料力学行为的数值分析[J]. 力学进展, 1998,28(2): 173-188.（FANG Dai-ning, ZHOU Chu-wei. Numerical analysis of the mechanics behavior of composites by finite element micromechanic method[J].Advances in Mechanics,1998,28(2): 173-188.（in Chinese））
[10]	Eshelby J D. The determination of the elastic field of an ellipsoidal inclusion, and related problems[J].Proceedings of the Royal Society of London, Series A, Mathematical and Physical Sciences,1957,241(1229): 376-396.
[11]	Mori T, Tanaka K. Average stress in matrix and average elastic energy of materials with misfitting inclusions[J].Acta Metalurgical,1973,21(5): 571-574.
[12]	Rosen B W. Fiber composite materials: papers presented at a seminar of the American society for metals[R]. American Society for Metals. Metal Park, Ohio, 1965: 68-90.
[13]	Fukuda H, Chou T-W. A probabilistic theory of the strength of short-fiber composites with variable fiber length and orientation[J].Journal of Materials Science,1982,17(4): 1003-1011.
[14]	Cox H L. The elasticity and strength of paper and other fibrous materials[J].British Journal of Applied Physics,1952,3(3): 72-79.
[15]	康国政, 高庆. 短纤维增强金属基复合材料基体中的应力分布及其变形特征[J]. 复合材料学报, 2000,17(2): 20-24.（KANG Guo-zheng, GAO Qing. Stress distribution and deformation characteristics of matrix in short fiber reinforced metal matrix composites[J].Acta Materiae Compositae Sinica,2000,17(2): 20-24.（in Chinese））
[16]	康国政, 高庆, 张吉喜. δ-Al₂O₃/Al合金基复合材料拉伸行为的分析和模拟[J]. 工程力学, 2000,17(5): 44-51.(KANG Guo-zheng, GAO Qing, ZHANG Ji-xi. The analysis and modeling of tensile behavior of δ-Al₂O₃/Al alloy composites[J].Engineering Mechanics,2000,17(5): 44-51.(in Chinese))
[17]	岳珠峰. 基于有限元的金属基短纤维复合材料MMC的一种统计蠕变模型[J]. 应用数学和力学, 2002,23(4): 381-390.(YUE Zhu-feng. Statistic modeling of the creep behavior of metal matrix composites based on finite element analysis[J].Applied Mathematics and Mechanics,2002,23(4): 381-390.(in Chinese))
[18]	YUE Zhu-feng, SHAO Xiao-jun. Micro numerical simulation of creep damage and failure of short fiber reinforced metal matrix composites(MMCs)[J].Rare Metal Materials and Engineering,2005,34(9): 1357-1360.
[19]	Chmelík F, Lukác P, Janecek M, Mollb F, Mordike B L, Kainer K-U, Langdon T G. An evaluation of the creep characteristics of an AZ91 magnesium alloy composite using acoustic emission[J].Materials Science and Engineering A,2002,338(1/2): 1-7.
[20]	Sklenicka V, Svoboda M, Pahutová M, Kucharová K, Langdon T G. Microstructural processes in creep of an AZ 91 magnesium-based composite and its matrix alloy[J].Materials Science and Engineering A,2001,319/321: 741-745.
[21]	Olbricht J, Yawny A, Young M L, Eggeler G. Mechanical and microstructural observations during compression creep of a short fiber reinforced AlMg metal matrix composite[J].Materials Science and Engineering A,2009,510/511: 407-412.
[22]	田君. 硅酸铝短纤维增强AZ91D复合材料蠕变行为的研究[D]. 博士学位论文. 广州: 华南理工大学, 2011.(TIAN Jun. Investigation on creep behaviors of Al₂O₃-SiO_2(sf)/AZ91D composite[D]. PhD Thesis. Guangzhou: South China University of Technology, 2011.(in Chinese))
[23]	王智祥, 刘雪峰, 谢建新. AZ91镁合金高温变形本构关系[J]. 金属学报, 2008,44(11): 1378-1383.(WANG Zhi-xiang, LIU Xue-feng, XIE Jian-xin. Constitutive relationship of hot deformation of AZ91 magnesium alloy[J].Acta Metallurgica Sinica,2008,44(11): 1378-1383.(in Chinese))

施引文献

资源附件(0)

访问统计

计量

文章访问数: 1175
HTML全文浏览量: 118
PDF下载量: 845
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

硅酸铝短纤维增强AZ91D镁基复合材料蠕变力学行为的微观数值模拟

doi: 10.3879/j.issn.1000-0887.2014.05.006

作者简介:
田君（1968—），男，湖南人，副教授，博士，硕士生导师(通讯作者. Tel: +86-769-22861281; E-mail: 841608534@qq.com)

计量

Micro Numerical Simulation of Creep Mechanical Behavior of Aluminum Silicate Short Fiber-Reinforced AZ91D Magnesium Matrix Composite

计量

目录

留言板

硅酸铝短纤维增强AZ91D镁基复合材料蠕变力学行为的微观数值模拟

doi: 10.3879/j.issn.1000-0887.2014.05.006

作者简介: 田君（1968—），男，湖南人，副教授，博士，硕士生导师(通讯作者. Tel: +86-769-22861281; E-mail: 841608534@qq.com)

计量

出版历程

Micro Numerical Simulation of Creep Mechanical Behavior of Aluminum Silicate Short Fiber-Reinforced AZ91D Magnesium Matrix Composite

计量

出版历程

目录

作者简介:
田君（1968—），男，湖南人，副教授，博士，硕士生导师(通讯作者. Tel: +86-769-22861281; E-mail: 841608534@qq.com)