论文部分内容阅读
以Ｎｉ 箔作中间层对新型阻尼材料ＣｕＡｌＢｅ 合金与１Ｃｒ１８Ｎｉ９Ｔｉ 不锈钢固相扩散焊接头的微观组织作了试验研究。结果表明，焊接热－ 力循环易使ＣｕＡｌＢｅ 合金近界面生成粗大的β相，α相沿晶界网状分布，这将引起热弹性马氏体阻尼功能退化；同时，ＣｕＡｌＢｅ 合金与１Ｃｒ１８Ｎｉ９Ｔｉ 不锈钢两者塑性变形能力的差异在较大程度上影响着扩散焊初期的原子扩散，进而影响稳定扩散阶段的冶金结合性。此外，焊接过程中原子相互扩散在一定程度上影响着接头的断裂特征。
The microstructure of CuAlBe alloy and 1Cr18Ni9Ti stainless steel solid phase diffusion welding joint with new damping material was studied with Ni foil as interlayer. The results show that the heat-force cycle of the welding tends to make the coarse β phase and the α phase distribute along the grain boundary near the CuAlBe alloy, which will degrade the damping function of the thermoelastic martensite. At the same time, the plasticity of both CuAlBe alloy and 1Cr18Ni9Ti stainless steel The difference of deformation ability affects the atomic diffusion in the early stage of diffusion welding to a great extent, and then affects the metallurgical bonding in the stable diffusion stage. In addition, the mutual diffusion of atoms in the soldering process to a certain extent affect the fracture characteristics of the joint.