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研究了不同Ni-P中间层厚度对碳钢/不锈钢双金属复合后剪切强度、金相组织、冶金结合层P含量的影响。结果表明,在中间层厚度为20μm时达到最大结合强度,最大强度为120 MPa;冶金结合层中共晶相形态随着Ni-P中间层厚度的增加逐渐由棒状变为块状析出;中间层厚度增加导致P扩散路径延长,从而使冶金结合层中P含量逐渐增加。
The effects of different thickness of Ni-P intermediate layer on the shear strength, microstructure and P content of the metallurgical bonding layer after carbon / stainless steel bimetallic composites were studied. The results show that the maximum bond strength and the maximum strength of 120 MPa are obtained when the thickness of the intermediate layer is 20 μm. The morphology of the eutectic phase in the metallurgical bonding layer gradually changes from a bar to a block as the thickness of the Ni-P intermediate layer increases. The increase leads to the extension of P diffusion path, so that the content of P in the metallurgical bonding layer gradually increases.