本文已被：浏览 429次 下载 1112次
中文摘要: 通过对激光熔覆铁基合金进行成分设计和试验， 获得了无裂纹熔覆层， 探讨 Ni 元素含量变化对熔覆层物
相组成、 显微组织及其性能的影响。 试验结果表明， 三种熔覆层组织均匀， 均为细密枝晶组织； 不同 Ni 含量熔
覆层的物相主要由 γ-Fe 相和 α-Fe 相组成， 随着 Ni 含量的增加， 熔覆层中 γ-Fe 相增加， 而 α-Fe 相减少， 熔覆层
晶粒尺寸增大， 表面里氏硬度降低， 但抗腐蚀性能随着 Ni 增加而增强， 熔覆层具有优良耐蚀性能的本质原因是
复合氧化膜的钝化作用对腐蚀介质产生机械阻隔作用。
Abstract:Several kinds of crack-free Fe–Based alloy cladding layers were obtained using laser cladding
process on 27SiMn steel surface. The effect of Ni content on the phase composition, microstructure, hardness
and corrosion resistance was studied. The results showed that the microstructure of the three cladding layers is
uniform and fine dendrite. The cladding layer with different content of Ni is mainly composed of α-Fe phase and
γ-Fe phase. With the increase of Ni content, the γ-Fe phase content in the cladding layer increased and α-Fe phase
content in the cladding layers decreased gradually. And the grain size of the cladding layers increased, while,
the hardness decreased. Corrosion resistance significantly improved of Fe-Based cladding layers were due to
Ni Content increasing, The main reason for the excellent corrosion resistance of the layers were the mechanical
barrier effect of the passivation effect of the composite oxide film.
文章编号： 中图分类号： 文献标志码：
基金项目:
引用文本：
田玉亮,李杰,皮自强.镍含量对铁基激光熔覆层组织与性能的影响[J].热喷涂技术,2020,12(2):52-58.
Yuliang Tian,Jie Li,Ziqiang Pi.Effect of Ni Content on the Structure and Propertiesof Fe-Based Laser Cladding Layers[J].Thermal Spray Technology,2020,12(2):52-58.
田玉亮,李杰,皮自强.镍含量对铁基激光熔覆层组织与性能的影响[J].热喷涂技术,2020,12(2):52-58.
Yuliang Tian,Jie Li,Ziqiang Pi.Effect of Ni Content on the Structure and Propertiesof Fe-Based Laser Cladding Layers[J].Thermal Spray Technology,2020,12(2):52-58.