[1]张世勋,王海龙,杨扬,等.ZrB2基层状复合材料力学性能与应力影响分析[J].郑州大学学报(工学版),2012,33(04):98-102.[doi:10.3969/j.issn.1671-6833.2012.04.023]
　ZHANG Shixun,WANG Hailong,YANG Yang.Mechanical Properties and Residual Stress Analysis of ZrB2-basedLaminated Composites[J].Journal of Zhengzhou University (Engineering Science),2012,33(04):98-102.[doi:10.3969/j.issn.1671-6833.2012.04.023]
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ZrB2基层状复合材料力学性能与应力影响分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年04期
页码:
98-102
栏目:
出版日期:
2012-07-10

文章信息/Info

Title:
Mechanical Properties and Residual Stress Analysis of ZrB2-basedLaminated Composites
作者:
张世勋; 王海龙; 杨扬; 等.
郑州大学力学与工程科学学院,河南郑州,450001, 郑州大学材料科学与工程学院,河南郑州,450001, 郑州大学材料科学与工程学院,河南郑州450001;郑州航空工业管理学院,河南郑州450015
Author(s):
ZHANG Shixun; WANG Hailong; YANG Yang
1. School of Mechanics & Engineering Seience, Zhengzhou University, 2hengzhou 450001, China; 2. School of MaterialsSeience and Engineering, 2hengzhou University, Zhengzhou 450001, China; 3. 2hengzhou Institute of Aeronautical IndustryManagement,Zhengzhou 450015，China
关键词:
二硼化锆;  层状复合材料;  超高温陶瓷;  内应力
Keywords:
Zirconium diboride;  laminated composies;  ultrahigh temperalure ceramics;  Residual stress.
分类号:
TB332
DOI:
10.3969/j.issn.1671-6833.2012.04.023
摘要:
通过层压复合技术制备出Mo/ZrB2层状复合材料,该复合材料的抗弯强度达到471 MPa,同时具有高的断裂韧性7.64 MPa·m1/2.研究发现材料内部的残余应力引起裂纹扩展阻力增大,裂纹发生偏转,材料因此得到强韧化.采用非均匀应变模型分析层状复合材料的内部残余应力,结果表明:基体层受拉应力,最大为64 MPa,界面层受压应力,最大为320 MPa,同时在层间存在剪切应力,最大为1.149MPa.基体层和界面层的厚度比对材料内部应力分布影响较大.
Abstract:
composites were prepared by roll-compaction and pressing sintering. That has ahigh bending strength (471 MPa) and fracture toughness (7.64 MPa * m1/2). The residual stress can be infavor of inereasing the thoughness of the laminated eomposite as the crack was blocked and deflected by stress.An uneven strain model is used to analyze the residual stress in the symmetric laminate composite. The resulpresented that the maximum tensile stress in the matrix layers is 64 MPa, the maximum compressive stress inthe Mo interlayer is 320 MPa. And the shear stress between the matrix layer and interlayer is 1. 149 MPa. Theresidual stress was affected by the thick ratio between matrix layer and interface layer.
更新日期/Last Update: 1900-01-01