东北大学学报(自然科学版) ›› 2024, Vol. 45 ›› Issue (7): 953-959.DOI: 10.12068/j.issn.1005-3026.2024.07.006
收稿日期:
2023-03-05
出版日期:
2024-07-15
发布日期:
2024-10-29
通讯作者:
刘常升
作者简介:
杨尚武(1997-),男,山西朔州人,东北大学硕士研究生
基金资助:
Shang-wu YANG1, Hai-xia QU2, Heng-jun LI3, Chang-sheng LIU1()
Received:
2023-03-05
Online:
2024-07-15
Published:
2024-10-29
Contact:
Chang-sheng LIU
About author:
LIU Chang-shengE-mail:csliu@mail.neu.edu.cn摘要:
为了提高热轧高速钢工作辊的耐磨性,通过激光熔覆技术,在球墨铸铁基体上制备了(Ti,W)C质量分数分别为0%,10%,20%,30%的Inconel 625合金涂层.研究了(Ti,W)C颗粒对涂层微观结构、硬度和耐磨性的影响.(Ti,W)C颗粒均匀分布在涂层中,并与Inconel 625有良好的结合;涂层的硬度随着(Ti,W)C颗粒含量增加从HV0.2280提高到HV0.2424;在摩擦磨损过程中,(Ti,W)C颗粒作为硬质相抑制了磨损中基体材料的局部塑性变形,质量分数30%(Ti,W)C颗粒的Inconel 625合金涂层磨损量仅为0.015 mm3,平均摩擦系数为0.061 6.证明添加适量的(Ti,W)C颗粒会显著提高Inconel 625合金涂层的硬度及耐磨性,并降低了摩擦系数.
中图分类号:
杨尚武, 瞿海霞, 黎恒君, 刘常升. 激光熔覆(Ti,W)C增强镍基涂层的性能[J]. 东北大学学报(自然科学版), 2024, 45(7): 953-959.
Shang-wu YANG, Hai-xia QU, Heng-jun LI, Chang-sheng LIU. Properties of (Ti,W)C Particles Reinforced Ni-based Coating by Laser Cladding[J]. Journal of Northeastern University(Natural Science), 2024, 45(7): 953-959.
Mo | C | Si | Mn | P | Cu | Ni | Fe |
---|---|---|---|---|---|---|---|
0.61 | 3.59 | 2.06 | 0.22 | 0.3 | 1.15 | 1.06 | 余量 |
表1 球墨铸铁化学成分(质量分数) (%)
Table 1 Chemical composition of ductile iron (mass fraction)
Mo | C | Si | Mn | P | Cu | Ni | Fe |
---|---|---|---|---|---|---|---|
0.61 | 3.59 | 2.06 | 0.22 | 0.3 | 1.15 | 1.06 | 余量 |
C | Ni | Cr | Mo | Nb | Fe | Ti | W |
---|---|---|---|---|---|---|---|
— | 58.0 | 20.0 | 8.0 | 3.0 | <5.0 | — | — |
表2 Inconel 625涂层粉末化学成分(质量分数) (%)
Table 2 Chemical composition of Inconel 625 coating powders (mass fraction)
C | Ni | Cr | Mo | Nb | Fe | Ti | W |
---|---|---|---|---|---|---|---|
— | 58.0 | 20.0 | 8.0 | 3.0 | <5.0 | — | — |
C | Ni | Cr | Mo | Nb | Fe | Ti | W |
---|---|---|---|---|---|---|---|
12.6 | — | — | — | — | — | 40.0 | 47.0 |
表3 (Ti,W)C涂层粉末化学成分(质量分数) (%)
Table 3 Chemical composition of (Ti,W)C coating powders (mass fraction)
C | Ni | Cr | Mo | Nb | Fe | Ti | W |
---|---|---|---|---|---|---|---|
12.6 | — | — | — | — | — | 40.0 | 47.0 |
样品 | 激光功率 | 扫描速度 | 送粉量 | 熔覆长度 | 载粉气流 | 搭接率/% | 预热温度 |
---|---|---|---|---|---|---|---|
W | mm·min-1 | r·min-1 | mm | L·min-1 | ℃ | ||
A-0 | 1000 | 400 | 2 | 80 | 6 | 40 | 200 |
A-10 | 1000 | 400 | 2 | 80 | 6 | ||
A-20 | 1200 | 400 | 2 | 80 | 8 | ||
A-30 | 1200 | 400 | 2 | 80 | 8 |
表4 Ni-(Ti,W)C涂层激光熔覆工艺参数
Table 4 Parameters of laser cladding process of Ni-(Ti,W)C coating
样品 | 激光功率 | 扫描速度 | 送粉量 | 熔覆长度 | 载粉气流 | 搭接率/% | 预热温度 |
---|---|---|---|---|---|---|---|
W | mm·min-1 | r·min-1 | mm | L·min-1 | ℃ | ||
A-0 | 1000 | 400 | 2 | 80 | 6 | 40 | 200 |
A-10 | 1000 | 400 | 2 | 80 | 6 | ||
A-20 | 1200 | 400 | 2 | 80 | 8 | ||
A-30 | 1200 | 400 | 2 | 80 | 8 |
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