李鹏
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Male
Alma Mater:西北工业大学
Degree:Doctoral Degree
School/Department:材料科学与工程学院
Discipline:The Joining Technique Of Materials. Materials Processing Engineering
Business Address:大连理工大学材料科学与工程学院铸造中心206室
Contact Information:一三四 七八五五 六八一六
E-Mail:lipeng2016@dlut.edu.cn
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Indexed by:期刊论文
Date of Publication:2021-01-10
Journal:MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume:793
ISSN No.:0921-5093
Key Words:Diffusion bonding; High entropy alloy; Superalloy; Microstructure evolution; Shear strength
Abstract:Eutectic high entropy alloys possess both excellent plasticity and high strength. To explore their potential engineering applications, the diffusion behavior of elements, the interfacial microstructure and shear strength of the diffusion bonded joint between AlCoCrFeNi2.1 eutectic high entropy alloy and GH4169 superalloy were studied. The width of diffusion zone increased with bonding temperature increasing and the voids gradually disappeared due to the increased diffusion rate of the elements and the high-temperature creep. A new layer of face-center-cubic (FCC') phase, which was caused by the difference in diffusion rate of the elements between B2 phase and FCC phase in the eutectic high entropy alloy, generated in the diffusion zone and increased the shear strength of joints. The width of newly generated FCC' phase layer in front of the original FCC phase was wider than that in front of the B2 phase. The shear strength of the resultant joints increased and the fracture mode transformed from brittle fracture to ductile fracture with bonding temperature increasing. The maximum shear strength of 528 MPa was obtained and the dimples on fracture surfaces were found at the bonding temperature of 1050 degrees C.
李鹏，男，教授/院长助理，国家重点研发计划青年项目首席科学家。
主要从事先进材料高性能连接理论与技术、集成电路复杂结构精密成型、异种材料连接工艺及冶金机理、新型焊接材料成分设计、医工交叉方面的研究工作。主持国家重点研发计划青年科学家项目、国家自然科学基金项目（3项）、装备预研教育部联合基金-青年人才项目、工信部产业基础再造和制造业高质量发展专项项目（课题负责）、教育部“春晖计划”合作科研项目、中国博士后科学基金特别资助和面上资助项目、辽宁省自然基金等省部级以上纵向项目10余项，JK项目4项；作为技术骨干参与国家重点研发计划、两机专项、GF基础科研、ZF领域基金等重点项目。
近5年发表SCI论文50余篇，ESI高被引1篇，授权国家发明专利8项，制定行业标准2项。获辽宁省自然科学学术成果奖1项，中国机械工程学会优秀论文1篇，《焊接学报》高影响力论文1篇&封面1篇，《中国有色金属学报》英文版亮点论文1篇等。担任Journal of Materials Science & Technology、Corrosion Science、Materials Science and Engineering A、Materials & Design、Journal of Alloys and Compounds等40余个期刊审稿人，被评为Materials Science and Engineering A和Journal of Manufacturing Processes期刊杰出审稿人(Outstanding reviewer award)。
所指导学生多次获辽宁省优秀硕士学位论文（20届-王帅，21届-孙浩田）、辽宁省优秀毕业研究生2人、辽宁省研究生材料先进连接技术竞赛一等奖4项、辽宁省大学生焊接创新大赛校赛一等奖、中国大学生机械工程创新创意大赛三等奖2项、校优秀硕士学位论文、校优秀毕业研究生、校优秀毕业设计论文和国家奖学金等荣誉及奖励。
课题组人文环境宽松，热忱欢迎有志青年（本、硕、博、博士后）加入！
