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In-situ TiC Reinforced Composite Coating Produced by Powder Feeding Laser Cladding

Sen YANG , Wenjin LIU , Minlin ZHONG , null , null

材料科学技术(英文)

A Ni-base alloy composite coating reinforced with TiC particles of various shapes and sizes on medium carbon steel substrate was produced by multilayer laser cladding. The chemical compositions, microstructures and surface morphology of the cladded layer were analyzed using energy dispersive X-ray s...

关键词: Laser cladding , null , null , null

Microstructure and Wear Behaviour of Laser-induced Thermite Reaction Al2O3 Ceramic Coating on AA7075 Aluminum Alloy

Kaijin HUANG

材料科学技术(英文)

The microstructure and wear behaviour of the thermite reaction coating produced by the hybrid laser cladding-remelting on AA7075 aluminum alloy for the systems of Al-CuO-SiO2, Al-Cr2O3-SiO2, Al-Fe2O3-SiO2, and Al-TiO2-SiO2 were studied. The results of the X-ray diffraction (XRD) analysis show that i...

关键词: Laser cladding , cladding , thermite , reaction , aluminu

Laser Cladding of Cold-Work Tool Steel by Pulse Shaping

Matej Pleterski

材料科学技术(英文)

Repair welding of cold-work tool steels in cold is very risky and almost impossible by conventional processes. The application of pulse shaping in laser cladding with wire to avoid the solidification problems in relevant steel is demonstrated. The results show that sound remelting and/or cladding ca...

关键词: Laser cladding

Influences of laser powers on microstructure and properties of the coatings on the AZ91HP magnesium alloy

Yali GAO , Dangsheng XIONG , Cunshan WANG , Yongzhe CHEN

金属学报(英文版) doi:10.1016/S1006-7191(08)60085-X

Al-Si alloy coatings were prepared on AZ91HP magnesium alloy by broad-beam laser cladding; the influences of the powers on the microstructure and properties of the coatings were discussed. It was found that the microstructure of the coatings at the powers of 3 and 3.5kW was characterized by Mg2...

关键词: Magnesium alloy , null , null , null

基于粒子群支持向量回归的原位自生工艺参数优化

杨垒 , 李文戈

材料科学与工艺

综合应用激光熔覆和原位反应增强金属基复合材料,是当前金属基复合材料研究领域的一个热点,本文采用该工艺制备铁基表面复合材料,重点考虑该工艺参数的确定问题.根据在不同工艺参数下合成的铁基表面的WC体积分数实测数据集,提出建立不同工艺参数下WC体积分数的支持向量回归预测模型,并与基于人工神经网络模型(AN...

关键词: 激光熔覆 , 原位自生 , 支持向量回归 , 粒子群算法

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