Friction and tribocorrosion behavior of Fe-Cr-B alloys manufactured by laser directed energy deposition

被引：10
作者：
Wang, Yaowei [1 ,2 ]
Xu, Lianyong [1 ,2 ,3 ]
Zhao, Lei [1 ,2 ]
Han, Yongdian [1 ,2 ]
Hao, Kangda [1 ,2 ]
Ren, Wenjing [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China
[2] Tianjin Univ, Tianjin Key Lab Adv Joining Technol, Tianjin 300350, Peoples R China
[3] Tianjin Univ, State Key Lab Engines, Tianjin 300350, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2023年 / 189卷
关键词：
Fe-Cr-B alloys; Laser directed energy deposition; Friction; Tribocorrosion; ABRASIVE WEAR BEHAVIOR; CORROSION; MICROSTRUCTURE; PHASES; TOUGHNESS; BORIDES; STEEL;
D O I：
10.1016/j.triboint.2023.108932
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The current assessment of tribocorrosion in alloys for mining machinery repair is insufficient. This study explored four Fe-Cr-B alloys with similar compositions but varying hardness. Dry and wet (water) friction tests align with the hardness hierarchy, indicating enhanced wear resistance with higher hardness. However, tribocorrosion tests yield diverse results. Notably, High-hardness alloys (JG-11# and 431) had many boride phases, displaying corrosion pits, leading to early corrosion failure. Low-hardness alloys (JG-3#) had fewer boride phases, indicating friction-dominated failure. Balancing both hardness and corrosion resistance, the alloy (JG-8#) demonstrates excellent tribocorrosion performance while ensuring the absence of micro corrosion pits.
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页数：15
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