浏览全部资源
扫码关注微信
纸质出版日期： 2024-07-25 ，
扫 描 看 全 文
王红顺，张峰，黄兆亮，等.窄孔内壁激光金属沉积Stellite6合金耐磨层组织及性能研究［J］.电焊机，2024，54（7）：68-75.
WANG Hongshun, ZHANG Feng, HUANG Zhaoliang, et al.Study on Microstructure and Properties of Stellite6 Alloy Wear-resistant Layer on the Inner Wall of Narrow Holes by Laser Metal Deposition[J].Electric Welding Machine, 2024, 54(7): 68-75.
为解决窄孔内壁堆焊的可达性差和提高304L不锈钢的耐磨性能，采用激光金属沉积的方式在深30 mm、直径14 mm的304L窄孔内壁制备了一层约2.5 mm厚、致密度为99.9981%、无裂纹、未熔合等缺陷的stellite6耐磨层。通过微纳CT、XRD、金相、硬度测试和摩擦磨损试验等方法，系统研究了耐磨层的组织、相组成、硬度分布和耐磨性能。结果表明，Stellite6耐磨层致密无缺陷，其显微组织从底部到顶部依次为平面晶、胞状晶、树枝晶和等轴晶。相组成主要为γ-Co、M
23
C
6
、CoCx及（Cr，Fe）
7
C
3
等。熔合线附近各种元素均匀分布，未出现明显聚集。耐磨层的显微硬度平均值是基体304L的2.38倍，且窄孔不同高度位置的显微硬度值相对稳定。耐磨层的磨损率较304L基体降低了29.3%，显示出优异的耐磨性能。该研究为大深宽比内孔壁激光金属沉积耐磨层在核电、能源动力等行业的应用提供了依据。
To solve the poor accessibility of narrow hole inner wall surfacing and enhance the wear resistance of 304L stainless steel
a layer of stellite 6 wear-resistant coating with a thickness of approximately 2.5 mm
density of 99.9981%
and free of cracks and unfused defects was deposited on the inner wall of a 304L narrow hole with a depth of 30 mm and diameter of 14 mm using laser metal deposition. The microstructure
phase composition
hardness distribution
and wear resistance of the wear-resistant layer were systematically investigated through micro-nano CT
XRD
metallographic examination
hardness testing
and friction wear testing. The results revealed that the stellite 6 wear-resistant layer was dense and defect-free
with its microstructure transitioning from planar crystals at the bottom to cellular crystals
dendrites
and equiaxed crystals at the top. The phase composition mainly consists of γ-Co
M
23
C
6
CoCx
and (Cr
Fe)
7
C
3
etc. Various elements are evenly distributed near the fusion line
with no significant aggregation. The average microhardness of the wear-resistant layer is 2.38 times that of the 304L matrix
and the microhardness values at different heights of the narrow hole are relatively stable. The wear rate of the wear-resistant layer is 29.3% lower than that of the 304L matrix
indicating excellent wear resistance. This study provides a ba
sis for the application of laser metal deposition wear-resistant coatings on large depth-width ratio inner hole walls in industries such as nuclear power and energy.
激光金属沉积窄孔内壁Stellite6合金组织性能耐磨层
laser metal depositionnarrow hole inner wallStellite6 alloymicrostructure and propertieswear-resistant layer
刘玉珍，桂业炜. 司太立合金的性能及应用（Ⅱ）［J］. 机械工程材料，1992（6）：1-6.
LIU Y Z，GUI Y W. The Properties and Applications of Stellite Alloy （II）［J］. Mechanical Engineering Materials，1992（6）：1-6.
王东，蒋寸才，王从亦，等. 镍中间层增强Stellite堆焊层力学性能研究［J］. 电焊机，2024，54（1）：69-74.
WANG D，JIANG C C，WANG C Y，et al. Research on the Mechanical Properties of Stellite Hardfacing Layer Enhanced by Nickel Intermediate Layer［J］. Welding machine，2024，54（1）：69-74.
胡西云. 核阀密封面Stellite6合金激光熔覆及覆层注N+表面改性研究［D］. 湖南：南华大学，2015：8-25.
HU X Y. Research on Laser Cladding and Surface Modification of Stellite 6 Alloy for Nuclear Valve Sealing Surface by N+Injection Coating［D］. Hunan：South China University，2015：8-25.
王安普，张峰，孙兵兵，等. TC4钛合金激光金属沉积力学性能各向异性机理研究［J］. 电焊机，2022，52（4）：14-20.
WANG A P，ZHANG F，SUN B B，et al. Research on the Anisotropy Mechanism of Mechanical Properties of TC4 Titanium Alloy Laser Metal Deposition［J］. Welding Machine，2022，52（4）：14-20.
刘双，刘秀波，傅戈雁，等. 激光熔覆技术及其在核电阀门中的研究进展［J］. 材料导报，2009，23（S1）：203-205.
LIU S，LIU X B，FU G Y，et al. Laser cladding technology and its research progress in nuclear power valves ［J］. Material Guide，2009，23（S1）：203-205.
郭宝超，蒋恩，陈亮. 压水堆驱动机构钩爪激光与GTAW钴基合金堆焊层组织分析及性能表征［J］. 材料导报，2019，33（A01）：4.
GUO B C，JIANG E，CHEN L. Analysis and characterization of microstructure and properties of GTAW cobalt based alloy overlay using hook claw laser for pressurized water reactor drive mechanism［J］. Material Introduction，2019，33（A01）：4.
刘福广，李勇，杨二娟，等. 超（超）临界核阀用耐热钢激光熔覆钴基合金修复研究［J］. 激光与光电子学进展，2021，58（05）：220-228.
LIU F G，LI Y，YANG E J，et al. Research on Laser Cladding Cobalt Based Alloy Repair of Heat Resistant Steel for Ultra （Supercritical） Nuclear Valves［J］. Progress in Laser and Optoelectronics，2021，58（05）：220-228.
王招阳，林健，雷永平，等. 激光熔覆制备Stellite6涂层的组织与性能［J］. 激光与红外，2020，50（10）：1172-1177.
WANG Z Y，LIN J，LEI Y P，et al. Structure and properties of Stellite 6 coating prepared by laser cladding［J］. Laser and Infrared，2020，50（10）：1172-1177.
任超，李铸国，疏达，等. 17-4PH不锈钢表面激光熔覆Stellite6涂层组织及耐水蚀性能［J］. 中国激光，2017，44（4）：107-114.
REN C，LI Z G，SHU D，et al. Microstructure and Water Corrosion Resistance of Stellite 6 Coating on 17-4PH Stainless Steel Surface by Laser Cladding［J］. LaserChina，2017，44（4）：107-114.
D'Oliveira A S C，da Silva P S C，Vilar R M. Microstructural features of consecutive layers of Stellite 6 deposited by laser cladding［J］. Surface and Coatings Technology，2002，153（2）：203-209.
Chai Q，Zhang H，Fang C. Numerical and experimental investigation into temperature field and profile of Stellite6 formed by ultrasonic vibration-assisted laser cladding［J］. Journal of Manufacturing Processes，2023，85（6）：80-89.
王东. 汽轮机叶片材料表面激光熔覆制备Stellite6合金涂层的研究［D］. 上海：上海交通大学，2014：15-16.
WANG D. Research on Laser Cladding Preparation of Stellite 6 Alloy Coating on the Surface of Steam Turbine Blade Materials［D］.Shanghai：Shanghai Jiao Tong University，2014：15-16.
张松，张春华，孙泰礼，等. 激光熔覆钴基合金组织及其抗腐蚀性能［J］. 中国激光，2001，28（09）：860-864.
ZHANG S，ZHANG C H，SUN T L，et al. Laser cladding of cobalt based alloy microstructure and its corrosion resistance［J］. China Laser，2001，28（9）：860-864.
张彦超，韦朋余，朱强，等. 316L不锈钢表面激光熔覆Stellite6合金组织及其耐液态铅铋腐蚀性能［J］. 材料导报，2021，35（08）：8121-8126.
ZHANG Y C，WEI P Y，ZHU Q，et al. The microstructure and resistance to liquid lead bismuth corrosion of Stellite 6 alloy by laser cladding on the surface of 316L stainless steel［J］. Guide Material，2021，35（08）：8121-8126.
He X，Liu X，Wang M，et al. Elevated temperature dry sliding wear behavior of nickel-based composite coating on austenitic stainless steel deposited by a novel central hollow laser cladding［J］. Applied Surface Science，2011，258（1）：535-541.
张峰，杜永勤，祝晓辉，等. 工业纯钛激光自熔焊接工艺及气孔形成机理研究［J］. 江苏科技大学学报（自然科学版），2018，32（01）：40-45.
ZHANG F，DU Y Q，ZHU X H，et al. Research on Industrial Pure Titanium Laser Self Fusion Welding Process and Pore Formation Mechanism［J］. Journal of Jiangsu University of Science and Technology （Natural Science Edition），2018，32（01）：40-45.
王新林，石世宏，郑启光. 激光熔覆层凝固特征与凝固组织控制研究［J］. 应用激光， 2001， 21（03）： 164-166.
WANG X L，SHI S H，ZHENG Q G. Research on Solidification Characteristics and Solidification Structure Control of Laser Cladding Layer［J］. Applied Laser，2001，21（03）：164-166.
余廷，张子翔，饶锡新，等. 激光熔覆Stellite6涂层的高温摩擦行为［J］. 激光与光电子学进展，2019，56（14）：184-190.
YU T，ZHANG Z X，RAO X X，et al. High temperature friction behavior of laser cladding Stellite 6 coating［J］. Progress in Laser and Optoelectronics，2019，56（14）：184-190.
相关作者
相关机构
公网安备11010802024621