徐州工程学院学报（自然科学版）2023，Vol.38Issue(4)：20-25,6.
等离子堆焊工艺对新能源柴油机气阀机械性能的影响
Effect of Plasma Cladding Process on the Mechanical Properties of New Energy Diesel Engine Valves
摘要
Abstract
Colmonoy56 SPL powder alloy cladding layer was prepared by plasma cladding technology on 42CrMo alloy structural steel substrate under different heat input conditions,and the microstructure,composition,dilution rate,Rockwell hardness,and microhardness of the alloy layer were analyzed by means of metallurgical microscope,scanning electron microscope,and hardness test.The results show that the alloy layer is mainly composed of three phases,namely,γ-Ni matrix phase,Cr-rich carbide phase,and chrysanthemum-like eutectic organization phase;there are differences in the dilution rate and microstructure of the alloy layer under different heat input conditions,and there are obvious differences in the single-phase microhardness of the different phases,and the phase ratio of the eutectic organization influences the macroscopic Rockwell hardness of the alloy layer,and with the increase of the phase ratio of the eutectic organization,the hardness of the alloy layer is on the trend of decreasing.The hardness of the alloy layer tends to decrease as the proportion of eutectic organization phase increases.关键词
等离子堆焊/焊接工艺/柴油机气阀/机械性能Key words
plasma cladding/welding process/diesel engine valve/mechanical properties分类
矿业与冶金引用本文复制引用
周方明,靳西奎,戴魏魏,赵大忠,王方旋..等离子堆焊工艺对新能源柴油机气阀机械性能的影响[J].徐州工程学院学报（自然科学版）,2023,38(4):20-25,6.基金项目
2021年江苏省研究生实践创新计划(SJCX211763) （SJCX211763）
