激光熔覆H13-TiC梯度复合涂层的制备与组织性能

汤晓丹; 姚建华; 孔凡志; 张群莉

doi:10.3969/j.issn.1001-3806.2010.03.012

激光熔覆H13-TiC梯度复合涂层的制备与组织性能

1.
浙江工业大学机械制造及自动化教育部重点实验室杭州 310014;
2.
浙江工业大学激光加工技术工程研究中心杭州 310014

作者简介: 汤晓丹(1983- ),男,硕士研究生,主要从事激光熔覆方面的研究..

通讯作者: 姚建华, las.Er@zjut.Edu.cn ;

基金项目:
浙江省重大科技专项重点工业资助项目(2008C11097);浙江省科技厅资助项目(2008C31041);浙江省自然科学基金资助项目(Y4090451)
中图分类号: TG156.99

Manufacture and microstructure performance of H13-TiC gradient composite coating made by laser cladding

1.
Key Laboratory of Mechanical Manufacture and Automation, Zhejiang University of Technology, Hangzhou 310014, China;
2.
Research Center of Laser Processing Technology and Engineering, Zhejiang University of Technology, Hangzhou 310014, China

Corresponding author: YAO Jian-hua, las.Er@zjut.Edu.cn ;

CLC number: TG156.99

摘要: 为了解决高温下热应力导致的常规涂层脱落与开裂,在Hl3钢表面激光熔覆制备了H13-TiC梯度复合涂层,采用扫描电镜、X射线衍射、电子探针能谱等技术对梯度涂层的组织形貌、成分分布、硬度和热稳定性进行了分析。结果表明,涂层主要由Fe-Cr,TiC,TiO2和Fe7C3等物相组成,其中TiC呈现近多面体、枝晶态等外形;随着TiC含量的增加,TiC颗粒的尺寸变大,梯度涂层的硬度逐渐提高,结合区的枝晶组织逐渐变小,呈现明显的梯度分布;600℃高温加热空冷处理后,各层间重熔软化区硬度下降幅度最大,其次为基体H13钢,整体上硬度仍呈梯度分布。可以看出,激光熔覆H13-TiC梯度复合涂层有着极大的应用潜力。
- 激光技术 /
- 激光熔覆 /
- 梯度复合涂层 /
- H13-TiC /
- 热稳定性
Abstract: In order to solve the coating's general peeling and cracking problems caused by thermal stress at high temperature,H13-TiC gradient composite coatings were made by laser cladding on the surface of H13 hot-work die steel substrates.Using scanning electron microscope,X-ray diffraction and energy dispersive spectrometry,the microstrueture and morphology,distribution of constituents,hardness and thermal stability were checked.The results show that the coating mainly consists of Fe-Cr,TiC,TiO4 and Fe7C3.Polyhedron and dendritic TiC particles were dispersed in the coating.With the rising of TiC,TiC particles become larger,the hardness of the gradient coating is gradually improved,the dendritic structure in the bonding zone become smaller,and their distribution is in gradient.After heating at high temperature of 600℃ and cooling in the air,the decrease of the hardness is the largest in remehing region among the layers,while the substrate H13 steel is in the second place.On the whole,the hardness distribution of the coating is still in gradient.H13-TiC gradient composite coatings made by laser cladding have a great potential for applications.
- laser technique /
- laser cladding /
- gradient composite coating /
- H13-TiC /
- thermal stability

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激光熔覆H13-TiC梯度复合涂层的制备与组织性能

作者简介: 汤晓丹(1983- ),男,硕士研究生,主要从事激光熔覆方面的研究..

通讯作者: 姚建华, las.Er@zjut.Edu.cn ;

Manufacture and microstructure performance of H13-TiC gradient composite coating made by laser cladding

Corresponding author: YAO Jian-hua, las.Er@zjut.Edu.cn ;

计量

激光熔覆H13-TiC梯度复合涂层的制备与组织性能

通讯作者: 姚建华, las.Er@zjut.Edu.cn;

作者简介: 汤晓丹(1983- ),男,硕士研究生,主要从事激光熔覆方面的研究.

English Abstract

Manufacture and microstructure performance of H13-TiC gradient composite coating made by laser cladding

Corresponding author: YAO Jian-hua, las.Er@zjut.Edu.cn

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留言板

激光熔覆H13-TiC梯度复合涂层的制备与组织性能

作者简介: 汤晓丹(1983- ),男,硕士研究生,主要从事激光熔覆方面的研究..

通讯作者: 姚建华, las.Er@zjut.Edu.cn ;

Manufacture and microstructure performance of H13-TiC gradient composite coating made by laser cladding

Corresponding author: YAO Jian-hua, las.Er@zjut.Edu.cn ;

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激光熔覆H13-TiC梯度复合涂层的制备与组织性能

通讯作者: 姚建华, las.Er@zjut.Edu.cn;

作者简介: 汤晓丹(1983- ),男,硕士研究生,主要从事激光熔覆方面的研究.

English Abstract

Manufacture and microstructure performance of H13-TiC gradient composite coating made by laser cladding

Corresponding author: YAO Jian-hua, las.Er@zjut.Edu.cn

全文HTML

目录