本文分析了异种材料固相连接接头热应力形成特点及其影响因素，指出材料的力学和热学性能与接头几何的匹配是异种材料固相连接热应力缓和设计的基础。
It is pointed that the matching of material properties and joint geometry is fundamental to the thermal stresses relaxation in the design of joints of dissimilar materials.
涂层成分的梯度化，可有效地缓和制备过程中的热应力。
The gradient distribution of coatings' composition can effectively reduce thermal stress during fabrication process.
与一般涂层相比，梯度涂层显示出更为优异的弯曲强度、结合强度、抗热冲击性、显微硬度分布及缓和热应力等性能。
As compared to general coating, gradient coating has even more excellent performances in bending strength, bonding strength, thermal shock resistance, microhardness and thermal stress relaxation.
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