将前端科学研究与实际工程问题融入教学——晶体缺陷的教学实践与探索INTEGRATING THE ADVANCED SCIENTIFIC RESEARCH AND PRACTICAL ENGINEERING ISSUES INTO THE TEACHING——TEACHING PRACTICE AND EXPLORATION OF CRYSTAL DEFECTS
陶杰,沈一洲,项俊贤
摘要(Abstract):
晶体缺陷是影响材料性能的关键因素,位错理论是提高材料强度的重要基础,已成为当今晶体塑性理论和材料强化理论的基石。由于其概念复杂、理论抽象,学生在学习过程中往往无法建立完整的晶体缺陷和位错理论的认知体系,缺乏用位错理论解决复杂材料工程问题的能力。本文从晶体变形与位错运动的基本规律出发,抓住位错交互作用的难点开展教学过程设计,引领学生演绎点、线、面、体缺陷之间的相互转化过程,并结合前端科学研究与实际工程问题,深化学生对晶体缺陷知识和理论的掌握;围绕课程思政、答疑思辨、过程考核等教学环节,系统总结了晶体缺陷与位错理论的课程教学实践与创新教学方法。
关键词(KeyWords): 教学设计;晶体缺陷;位错理论;前端科学研究;实际工程问题
基金项目(Foundation): 国家一流课程建设项目;; 南京航空航天大学英才计划(2019JG0680K)的资助
作者(Author): 陶杰,沈一洲,项俊贤
参考文献(References):
- [1] 徐香,刘清芝,代辉,等.《材料科学基础》教学中的晶体缺陷[J].教育教学论坛,2015(40):223-224.XU X,LIU Q Z,DAI H,et al.Crystal defects in the teaching of Fundamentals of Materials Science[J].Education Teaching Forum,2015(40):223-224.(in Chinese)
- [2] 刘晶晶,高吉成,李大玉,等.基于微课视角的大学专业基础课教学模式改革与创新——以材料科学基础“晶体位错”微课设计为例[J].教育教学论坛,2020(30):200-201.LIU J J,GAO J C,LI D Y,et al.Teaching model reform and innovation of college basic courses in specialty from the perspective of micro-lectures:taking the design of “crystal dislocation” micro-lecture of materials science foundations as an example[J].Education Teaching Forum,2020(30):200-201.(in Chinese)
- [3] 沈一洲,陶杰.航空工程背景下材料科学基础课程的教学改革与探索[J].教育现代化,2020,7(26):50-52.SHEN Y Z,TAO J.Teaching reform and exploration of materials science foundation under the background of aviation engineering[J].Education Modernization,2020,7(26):50-52.(in Chinese)
- [4] 施冰心,刘成.当前大学生学习源动力现状及其提升策略探究——基于上海市8所高校实证调研分析[J].上海理工大学学报(社会科学版),2022,44(3):305-310.SHI B X,LIU C.College Students' Learning Motivation and Its Promotion Strategies—Based on the Empirical Research and Analysis of 8 Universities in Shanghai[J].Journal of University of Shanghai for Science and Technology (Social Science edition),2022,44(3):305-310.(in Chinese)
- [5] 高庆飞,张坤,李钧.大学生学习积极性影响因素与对策研究[J].教育现代化,2020,7(50):174-177.GAO Q F,ZHANG K,LI J.Research on the Influencing Factors and Countermeasures of College Students' Learning Enthusiasm[J].Education Modernization,2020,7(50):174-177.(in Chinese)
- [6] 黄炯,叶伟巍,谢孟泽,等.互联网技术环境下理工科大学生学习行为影响因素实证研究[J].高等工程教育研究,2018(5):161-165.HUANG J,YE W W,XIE M Z,et al.The Influencing Factors of Learning Behavior of Science College Students in the Context of Internet Technology[J].Research in Higher Education of Engineering,2018(5):161-165.(in Chinese)
- [7] LI M Q,SHEN Y D,LUO K,et al.Harnessing dislocation motion using an electric field[J].Nature Materials,2023,22:958-963.
- [8] 范群成,田民波.材料科学基础学习辅导[M].北京:机械工业出版社,2020:89-90.
- [9] 余永宁.材料科学基础[M].2版.北京:高等教育出版社,2012:187-190.
- [10] FAN H D,WANG Q Y A.El-Awady Jaafar,et al.Strain rate dependency of dislocation plasticity[J].Nature Communications,2021(12):1845.
- [11] CHEN G,PENG Y B,ZHENG G,et al.Polysynthetic twinned TiAl single crystals for high-temperature applications[J].Nature Materials,2016(15):876-881.
- [12] DING Q Q,ZHANG Y,CHEN X,et al.Tuning element distribution,structure and properties by composition in high-entropy alloys[J].Nature,2019(574):223-227.