作者：Yueling Guo;Junyang He;Zhiming Li;Xiaoxiang Wu;... Changmeng Liu （[a]aSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China[b]bMax-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, Düsseldorf 40237, GermanyMax-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, Düsseldorf 40237, Germany[c]cState Key Laboratory of Powder Metallurgy, School of Materials Science and engineering, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, School of Materials Science and engineering, Central South University, Changsha 410083, China[d]dSchool of Iron and Steel, Soochow University, Suzhou 215137, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215137, China[e]eDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China）

出处：Materials Characterization 2022

关键词：Refractory high entropy alloy;Yttrium alloying;Grain refinement;Mechanical property;Fracture surface

摘要：Here we employ the rare-earth element alloying strategy for microstructure and mechanical property tuning of a TaMo_0.5NbZrTi_1.5A ...

作者：Yu, Zeyang¹; Li, Zixiang²; Guo, Yueling¹; Fu, Rui³; Xu, Tianqiu¹; Liu, Changmeng¹; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing; 100081, China;²Department of Mechanical Engineering, Tsinghua University, Beijing; 100084, China;³Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing; 100081, China）

出处：Journal of Alloys and Compounds 2022

关键词：Ti₂AlNb-based alloy;Twin-wire arc additive manufacturing;Droplet transfer mode;Composition segregation;Mechanical property

摘要：The twin-wire arc additive manufacturing (TWAAM) technology is an effective method for the in-situ fabrication of Ti2AlNb-based alloys relative to con ...

作者：Chen, Ying¹; Liu, Changmeng¹; Yan, Huaiying³; Fan, Yongtian³; Wang, Jiachen²; Cui, Yinan²; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing; 100081, China;²Applied Mechanics Lab., School of Aerospace Engineering, Tsinghua University, Beijing; 100084, China;³Material Center, Shandong Machinery Design and Research Institute, Jinan; 250031, China）

出处：Surface and Coatings Technology 2022

摘要：Nitriding is well-known as a surface treatment method to improve the wear and fatigue properties. This work demonstrates the capability of nitriding i ...

作者：Wang, Jiachen¹; Liu, Changmeng²; Lu, Tao²; Fu, Rui²; Xu, Tianqiu²; Li, Zixiang³; Jing, Chenchen²; Cui, Yinan¹; （¹Applied Mechanics Lab., Dept. of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing; 100084, China;²School of Mechanical Engineering, Beijing Institute of Technology, Beijing; 100081, China;³School of Mechanical Engineering, Tsinghua University, Beijing; 100084, China）

出处：International Journal of Refractory Metals and Hard Materials 2022

关键词：Wire arc additive manufacturing;Molybdenum;Microstructure;Tensile properties;Fracture

摘要：Molybdenum is an important high-temperature structural material but has poor processability. Additive manufactured unalloyed Mo is generally very smal ...

发明人：刘长猛，韩骁，齐江珉

申请日期：2023.09.08

摘要：本发明公开一种金属单晶制造装置，涉及金属单晶制造技术领域，可以包括：基板、焊枪、送丝组件以及移动组件，所述基板上用于形成金属单晶体；所述焊枪设置有多个，全部所述焊枪的分布形态与待制造的金属单晶体形状相匹配；所述送丝组件包括送丝嘴，且所述送丝嘴靠近所述焊枪设置，所述焊枪能够产生电弧以熔化所述送丝嘴输送 ...

作者：Tianqiu Xu¹;Junjin Huang¹;Yinan Cui²;Chenchen Jing¹;Tao Lu¹;Shuyuan Ma¹;Xue Ling³;CA1;Changmeng Liu¹;CA2 （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;²Applied Mechanics Lab, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;³Key Laboratory on Deep Geo-Drilling Technology of the Ministry of Land and Resources, China University of Geosciences, Beijing 100083, China）

出处：Materials & Design 2021

关键词：Pulse hot-wire arc additive manufacturing;Panel-core connection method;Lattice sandwich structure

摘要：Large size sandwich structure is involved in a wide range of applications, such as aerospace and ship. However, the weak connection between panel and ...

作者：Yangyu Yan¹;Jiashun Si¹;Xinglong Di¹;Yueling Guo¹;CA1;Qifei Han¹;Changmeng Liu¹; （¹Key Laboratory of Fundamental Science for Advanced Machining Technology, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China）

出处：Journal of Manufacturing Processes 2024

摘要：Here, wire arc additive manufacturing (WAAM) is employed for the fabrication of Al-Cu-Mg-Ag alloy, focusing on improving mechanical property via elimi ...

作者：Xu, Tianqiu¹;Zhang, Meng¹;Wang, Jiachen²;Lu, Tao¹;Ma, Shuyuan¹;Liu, Changmeng¹; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing; 100081, China;²Applied Mechanics Lab., School of Aerospace Engineering, Tsinghua University, Beijing; 100084, China）

出处：Journal of Manufacturing Processes 2022

摘要：Wire arc additive manufacturing (WAAM) is a promising additive manufacturing technique with growing acceptance in fabricating large size components. I ...

作者：李昌远¹;，刘长猛¹;，鲁涛¹;，郭跃岭¹;，刘彬²; （¹北京理工大学机械与车辆学院；²中国运载火箭技术研究院北京宇航系统工程研究所）

出处：Transactions of Nonferrous Metals Society of China 2024

关键词：电弧增材制造；纯钛；高氧含量；显微组织；力学性能

摘要：通过电弧增材制造原位制备高氧钛，并对高氧钛的成分偏析、显微组织和力学性能进行研究。结果表明，高氧钛试样的显微组织主要呈现为针状α相集束。随着氧含量的增加，试样针状α相逐渐变宽，集束尺寸变大。受氧的强化作用以及晶粒尺寸效应共同影响，试样的强度先提高后下降，伸长率显著下降，断裂形式由塑性断裂向解理断裂过 ...

作者：Xu, Tianqiu¹; Liu, Jiawei²; Wang, Jiachen³; Lu, Tao¹; Ma, Shuyuan¹; Liu, Changmeng¹; （¹School of Mechanical Engineering, Beijing Institute of Technology, Beijing; 100081, China;²China Electronic Product Reliability and Environmental Testing Research Institute (CEPREI), Guangzhou; 511370, China;³Applied Mechanics Lab., School of Aerospace Engineering, Tsinghua University, Beijing; 100084, China）

出处：Journal of Manufacturing Processes 2022

关键词：Wire arc additive manufacturing;Mechanical anisotropy;Layer control method

摘要：Wire arc additive manufacturing (WAAM) is an important manufacturing technology for fabricating large-size titanium alloy parts, which has important a ...