摘要
以Fe-Cr-C-Nb堆焊熔敷金属为试验材料,进行了动载冲击磨损试验。通过X射线衍射分析、扫描电镜及能谱分析、激光扫描共聚焦显微镜分析等检测方法表征了冲击能量对熔敷金属的显微组织及其抗冲击磨损性能的影响进行了研究。结果表明:随着冲击能量的增加,磨损失重、磨痕粗糙度均减小;堆焊合金的磨损机制为磨粒法向挤压作用及对奥氏体基体的强塑变犁耕作用;随着冲击能量的增加,熔敷金属表面产生加工硬化,使奥氏体基体具有一定的耐磨粒侵蚀性,导致磨损失重随冲击能量的增大而减小。
The dynamic load impact wear test was carried out by using Fe-Cr-C-Nb surfacing metal as the test material. Impact energy on the microstructures and impact wear resistance of hardfacing alloy were characterized by X-ray diffraction analysis, scanning electron microscope and energy spectrum analysis, laser scanning confocal microscope analysis and other inspection methods. The results showed that with the increase of impact energy, the wear loss and the roughness of the wear scar were reduced. The wear mechanism of the hardfacing alloy was the normal extrusion of abrasive grains and the plowing effect on the austenite matrix. With the increase of impact energy,the work hardening of the sample made the austenite matrix had a certain erosion resistance of wear-resistant particles, which caused the wear loss to decrease with the increase of impact energy.
作者
付雅迪
段嘉旭
黄智泉
刘胜新
陈永
吴书菲
FU Ya-di;DUAN Jia-xu;HUANG Zhi-quan;LIU Sheng-xin;CHEN Yong;WU Shu-fei(School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,Henan pro.,China;Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,Henan pro.,China)
出处
《焊接技术》
2021年第1期9-12,28,I0011,共6页
Welding Technology
基金
郑州市重大科技创新专项资助项目(188PCXZX784)。
