Li Hao, Zhang Liyuan, Zhang Boyang, Zhang Qingdong
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Materials (Basel). 2019 Feb 8;12(3):509. doi: 10.3390/ma12030509.
In this study the microstructure and mechanical properties of stainless steel clad plate are researched. Due to element diffusion (Fe, Cr, Ni, Mn), a 20 μm thick diffusion layer is formed between stainless steel and carbon steel clad plate. The diffusion layer has a stable mechanical performance without obvious grain microstructure, and its internal mechanical properties show a graded change in the thickness direction. This is beneficial to a strong bond between stainless steel and carbon steel and the stable transition of mechanical performance in the thickness direction, as well as further carbon diffusion changes in the microstructure and mechanical properties near the diffusion layer of clad plate. Carburization stainless steel with a thickness of 150 μm is formed in the stainless steel side and decarburization carbon steel with a thickness of 80 μm is formed in the carbon steel side.
本研究对不锈钢复合板的微观结构和力学性能进行了研究。由于元素扩散（铁、铬、镍、锰），在不锈钢与碳钢复合板之间形成了一层20μm厚的扩散层。该扩散层具有稳定的力学性能，无明显的晶粒微观结构，其内部力学性能在厚度方向上呈梯度变化。这有利于不锈钢与碳钢之间的牢固结合以及力学性能在厚度方向上的稳定过渡，同时也有利于复合板扩散层附近微观结构和力学性能的进一步碳扩散变化。在不锈钢一侧形成了厚度为150μm的渗碳不锈钢，在碳钢一侧形成了厚度为80μm的脱碳碳钢。
