Zhanhua Gan , Guoqing Chen , Xinyan Teng , Lamei Zhang , Junhong Zhao , Xuesong Leng
{"title":"Effect of welding speed on the microstructure and mechanical properties of Mo-10Re alloy electron beam welded joints","authors":"Zhanhua Gan , Guoqing Chen , Xinyan Teng , Lamei Zhang , Junhong Zhao , Xuesong Leng","doi":"10.1016/j.matlet.2025.138528","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigated the effects of welding speed on the microstructure and mechanical properties of Mo-10Re alloy electron beam welded (EBW) joints. The weld zone (WZ) was composed of coarse equiaxed grains of a Mo-based solid solution, with oxygen pores concentrated near the fusion line. As welding speed increased from 210 mm/min to 270 mm/min, the following changes were found: the grain size of WZ decreased from 146.1 μm to 110.7 μm; the porosity of WZ increased from 0.23 % to 0.45 %; and the tensile strength of joints increased from 268.2 MPa to 291.3 MPa. All joints failed at the center of the WZ through intergranular fracture, while welding speed had no significant effect on the microhardness of the joints.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138528"},"PeriodicalIF":2.7000,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X25005579","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/3 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This study investigated the effects of welding speed on the microstructure and mechanical properties of Mo-10Re alloy electron beam welded (EBW) joints. The weld zone (WZ) was composed of coarse equiaxed grains of a Mo-based solid solution, with oxygen pores concentrated near the fusion line. As welding speed increased from 210 mm/min to 270 mm/min, the following changes were found: the grain size of WZ decreased from 146.1 μm to 110.7 μm; the porosity of WZ increased from 0.23 % to 0.45 %; and the tensile strength of joints increased from 268.2 MPa to 291.3 MPa. All joints failed at the center of the WZ through intergranular fracture, while welding speed had no significant effect on the microhardness of the joints.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
