Numerical simulation on thermal shock damage behavior of TiB2-Cu composite via combustion synthesis

作者：Hong CQ^*; Han JC; Zhang XH; Xu Q

来源：Rare Metal Materials and Engineering, 2006, 35(1): 47-51.

• TiB2-Cu composite
• thermal shock
• damage
• numerical simulation

The thermal shock behavior of TiB2-Cu composite by combustion synthesis was investigated using plasma arc heating and numerical simulation. The transient temperature field and thermal stress fields affected by inhomogeneous boundary conditions of heat transfer in high temperature were simulated and analyzed based on the thermal physical data with ANSYS commercial software. The results reveal that the maximum compression stresses are generated at center of sample and decreased along radius. The compression stresses transform to tensile stresses when the arc beam gets across the heating area, and the largest tensile stress takes place in the edge of the specimen. The crack may initiate in the edge of the sample, and then properly propagates to the position of center in the direction of radius. The experiment of plasma are heating also favor and approve the rationality of theoretical model.

• 出版日期2006-1
• 单位北京理工大学; 哈尔滨工业大学