Article
Metallurgy & Metallurgical Engineering
Gao-qi Wang, Shou-ren Wang, Xue-feng Yang, Dao-sheng Wen, Yu Guo
Summary: ZK60 magnesium alloy was treated with laser shock peening at different laser energy densities and then fretting corrosion wear tests were conducted on the treated and untreated samples. The relationships between microstructure, residual stress, surface hardness, tensile strength, corrosion resistance, and fretting corrosion wear behavior were analyzed. Results showed that laser shock peening treatment can reduce fretting corrosion wear volume by up to 73.4%. The improvement in surface hardness, tensile strength, and corrosion resistance due to fine grain strengthening, dislocation and twinning-induced strain hardening, and compressive residual stress contribute to the reduction of fretting corrosion wear.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Coatings & Films
Zhanghan Tang, Xia Dong, Kedian Wang, Yongxiang Geng, Meng Gao, Xuesong Mei
Summary: By changing the experimental sequence of WLSP and LSP, this study investigates the effects of different surface treatments on DD6 superalloy samples. The results show that all surface treatments induce 110 cross-slip bands and strengthen the sample surface. Single WLSP plus single LSP treatment effectively prevents thermal relaxation of the CRS layer and results in a better CRS layer thickness, dislocation distribution, and density compared to double LSP and double WLSP treatments. Pipeline diffusion of elements improves the electrochemical and thermal corrosion resistance of the single-crystal superalloy.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Junming Luo, Weiqing Tang, Shiyu Cui
Summary: Laser shock peening was used to prepare a composite coating on the surface of a titanium alloy, and the effects on the microstructure, phase structure, adhesion, hardness, corrosion resistance, and wear resistance were studied. The results showed significant improvements in the properties of the coating after laser shock peening treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Huaile Liu, Jiayang Gu, Zhaopeng Tong, Da Yang, Haojie Yang, Xudong Ren
Summary: The present study aimed to improve stress corrosion cracking behavior of AZ31 magnesium alloy in Hanks' solution through laser shock peening (LSP) and subsequent phosphate conversion (PC). The results showed that the LSP/PC composite coating significantly enhanced the corrosion resistance and mechanical properties of the alloy, attributed to the formation of a dense coating by PC reaction and a strain strengthened layer induced by LSP pretreatment.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Optics
Wei Guo, Hao Wang, Guangzhi He, Peng Peng, Dongsheng He, Guofeng Han, Jianfeng Yan
Summary: This study investigated the effects of NLSP and FLSP on 7050 aluminum alloy and compared the results. It was found that both NLSP and FLSP can produce similar surface improvement effects near the impacted surface. However, NLSP leads to a slow decrease in hardness and residual stress in the internal parts, while FLSP preserves the internal microstructures and properties.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Yuling Yang, Ying Lu, Wanru Shi, Baoping Hou, Hongchao Qiao, Jinyan Qi, Erlin Zhang, Gaowu Qin
Summary: This study examines the effects of laser shock peening (LSP) treatment on the phase constituents, microstructure, and surface properties of Ti-Cu alloys. The results show that LSP treatment refines the grain size, improves surface wettability, and enhances the corrosion resistance and antibacterial properties of the alloys.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Huaile Liu, Haojie Yang, Zhaopeng Tong, Da Yang, Yongzhou Ge, Xudong Ren
Summary: Phosphate conversion coatings were deposited on Mg alloys by chemical conversion, and then treated with laser shock peening to enhance their corrosion resistance. The LSP treatment improved the microstructure, phase structure, surface residual stress, and corrosion performance of the coatings. The dense and flat coating formed after LSP treatment exhibited reduced corrosion current and increased impedance compared to the untreated coating.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zheng-Yang Li, Xiong-Wei Guo, Shi-Jia Yu, Chuang-Ming Ning, Yong-Jun Jiao, Zhen-Bing Cai
Summary: This study investigated the characterization and electrochemical corrosion behavior of zirconium alloy after low energy laser shock peening (LE-LSP) treatment. The results showed that LE-LSP treatment increased the surface roughness and hardness of the zirconium alloy, as well as formed a melting layer, plastic deformation layer, and transition layer on the surface. The electrochemical corrosion resistance of the zirconium alloy was improved after LE-LSP treatment.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Applied
Wei Luo, Kai Qi, Yubing Qiu, Xingpeng Guo
Summary: A polypyrrole/zinc (PPy/Zn) bilayer coating is prepared to improve the corrosion resistance of ZK60 magnesium alloy. The zinc coating acts as an intermediate layer for growing the PPy film and shows good abrasion resistance and adhesion strength. The prepared PPy/TA films on the Zn coating are compact and stable in solution, and the PPy film's stability determines the protective performance of the PPy/Zn coating during immersion.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Coatings & Films
Hairong Bian, Zhao Wang, Jiajun Liu, Haifei Lu, Kaiyu Luo, Jinzhong Lu
Summary: The effect of laser shock peening (LSP) on the microstructural evolution and thermal corrosion behaviors of laser powder bed fusion processed (LPBFed) Ti6Al4V samples in mixed solutions was studied. It was found that LSPed samples exhibited a thinner and denser thermal corrosion layer compared to LPBFed samples, leading to significantly reduced mass gain and improved thermal corrosion resistance. This improvement can be attributed to the presence of refined grains, high-density dislocations, and nano-twins. The mechanism of improved thermal corrosion resistance in LSPed Ti6Al4V alloy was revealed.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Haifei Lu, Zhao Wang, Jie Cai, Xiang Xu, Kaiyu Luo, Liujun Wu, Jinzhong Lu
Summary: The study revealed that laser shock peening treatment can effectively enhance the hot corrosion resistance of SLMed Ti6Al4V titanium alloy by generating high-density dislocations and nano-twins to enhance the grain boundary effect.
Article
Materials Science, Coatings & Films
Zhaopeng Tong, Xuyang Pan, Wangfan Zhou, Yu Yang, YunXia Ye, Daishu Qian, Xudong Ren
Summary: This study aims to fabricate a high-entropy alloy with excellent wear and corrosion properties through laser additive manufacturing and laser shock peening. The results showed that the friction coefficients and wear rates significantly decreased after laser shock peening, leading to improved wear and corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Lingyi Liao, R. Gao, Z. H. Yang, S. T. Wu, Q. Wan
Summary: In this study, a cross-scale investigation was conducted to explore the effects of laser shock peening (LSP) and physical vapor deposition (PVD) coating on the wear and corrosion resistance of FeCoCrNiAl high entropy alloys (HEA). The results revealed that LSP treatment enhanced the corrosion resistance by inducing compressive residual stress, while PVD coating exhibited reduced corrosion resistance due to grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Wenbo Wang, Micheal Kattoura, Stan Bovid, Zhengyu Zhang, David Lahrman, Wenjun Cai
Summary: This study investigated the effects of nanosecond laser shock peening (ns-LSP) parameters on the surface tribocorrosion resistance of WE43 Mg alloys. It was found that the corrosion cathodic reaction rate was decreased and tribocorrosion rate was reduced by 47.8% under lower laser power density and overlapping ratio conditions.
Article
Materials Science, Multidisciplinary
Jingwei Liang, Shibo Wu, Zhenglong Lei, Yanbin Chen, Xinrui Zhang, Bingwei Li, Meng Jiang, Yuan Chen
Summary: In this study, the effects of preheating temperature on the microstructure, mechanical properties, and corrosion resistance of a ZK60 Mg alloy processed by laser powder bed fusion (LPBF) were analyzed. The results showed that as the preheating temperature increases, the mechanical properties of the alloy improve, but the corrosion resistance first improves and then deteriorates. It was concluded that selecting an appropriate preheating temperature is crucial to obtain the desired mechanical properties and corrosion resistance.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Guodong Zhu, Shouren Wang, Wei Cheng, Gaoqi Wang, Wentao Liu, Yuan Ren
Article
Engineering, Mechanical
Yu Guo, Shouren Wang, Wentao Liu, Zhaolei Sun, Guodong Zhu, Teng Xiao
TRIBOLOGY INTERNATIONAL
(2020)
Article
Optics
Guodong Zhu, Shouren Wang, Mingyuan Zhang, Xuefeng Yang, Wentao Liu, Gaoqi Wang
Article
Optics
Guodong Zhu, Shouren Wang, Wei Cheng, Yuan Ren, Daosheng Wen
OPTICS AND LASER TECHNOLOGY
(2020)
Review
Optics
Guodon Zhu, Zhenhai Xu, Yang Jin, Xi Chen, Lijun Yang, Jie Xu, Debin Shan, Yanbin Chen, Bin Guo
Summary: Laser cleaning is a promising technology with green, environmentally friendly, and efficient features that can replace traditional cleaning processes. This paper elaborates on the specific action mechanism of three laser methods and discusses the effects of essential laser parameters on the cleaning effect. It also presents the typical applications and cleaning process parameters of pulse laser technology in various industries. The existing problems and future development trends of laser cleaning are pointed out, providing essential engineering practical value for clarifying the multi-action mechanism between laser and the cleaned object and establishing the cleaning process database.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
G-D Zhu, S-R Wang, W. Cheng, Y. Ren, M-Y Zhang, Y. Guo
Summary: With the development of the shipbuilding industry, aluminium alloys are widely used in hull parts due to their excellent strength, corrosion resistance, and weldability. This study focused on using a green and pollution-free laser cleaning technology to clean the aluminium alloy surface, and found that a laser power of 80 W had the best removal effect while a power of 120 W improved corrosion resistance.
LASERS IN ENGINEERING
(2021)