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当前位置: 首页 > 文章 > 陶瓷/硬质合金/陶瓷夹层复合片应力分析模型 农业机械学报 2002,33 (3) 121-124
Position: Home > Articles > A Model of Thermal Stresses in a Ceramic/Cemented Carbide/Ceramic Sandwich Compound Transactions of the Chinese Society for Agricultural Machinery 2002,33 (3) 121-124

陶瓷/硬质合金/陶瓷夹层复合片应力分析模型

作  者：
周建强;李兆前;艾兴
单  位：
莱阳农学院工程系;山东省经贸委;山东大学机械工程学院
关键词：
陶瓷;复合材料;热压烧结;残余应力
摘  要：
推导了由于热膨胀系数不同 ,在热压烧结陶瓷 /硬质合金夹层复合片内引起的残余应力计算公式 ;分析了夹层复合片产生热裂纹的原因及影响因素 ,所得结论对研制陶瓷 /硬质合金夹层复合刀片有一定的指导作用
译  名：
A Model of Thermal Stresses in a Ceramic/Cemented Carbide/Ceramic Sandwich Compound
作  者：
Zhou Jianqiang(Laiyang Agricultural College) Li Zhaoqian(Shandong Economy trade Committee) Ai Xing(Shandong University)
关键词：
Ceramic, Composite materials, Press sintering, Residual thermal stresses
摘  要：
A press sintered ceramic/cemented carbide/ceramic sandwich with strong interface has the advantages of ceramic and cemented carbide tool materials. Various cracks may appear on this kind of material due to the residual thermal stresses caused by the dismatch of thermal expansion of the two materials. Cracks in the symmetry face paralleling to the combined interface were observed in our experiments. Very limited analyses to explain this phenomenon in former references were found and the models established for calculating the stresses that contribute to the cracks vertical to the combined interface only before. A new model for calculating the residual thermal stresses in sandwich materials was established in this paper and the formulas of residual thermal stresses resulting from their differential expansion were derived for a press sintered ceramic/cemented carbide/ceramic sandwich compound. The factors affecting stresses were analyzed.

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