Towards understanding the brittle–ductile transition in the extreme manufacturing

作     者：Tao Zhang Feng Jiang Hui Huang Jing Lu Yueqin Wu Zhengyi Jiang Xipeng Xu Tao Zhang;Feng Jiang;Hui Huang;Jing Lu;Yueqin Wu;Zhengyi Jiang;Xipeng Xu

作者机构：National and Local Joint Engineering Research Center for Intelligent Manufacturing Technology of Brittle Material ProductsXiamen 361021People’s Republic of China Institute of Manufacturing EngineeringNational Huaqiao UniversityXiamen 361021People’s Republic of China School of MechanicalMaterialsMechatronic and Biomedical EngineeringUniversity of WollongongWollongong NSW 2522Australia 

出 版 物：《International Journal of Extreme Manufacturing》 (极端制造（英文）)

年 卷 期：2021年第3卷第2期

页      面：1-21页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：support from the National Natural Science Foundation of China (Grant No. 51835004) 

主　　题：brittle–ductile transition deformation scale deformation temperature grain size strain rate 

摘      要：The brittle–ductile transition(BDT) widely exists in the manufacturing with extremely small deformation scale, thermally assisted machining, and high-speed machining. This paper reviews the BDT in extreme manufacturing. The factors affecting the BDT in extreme manufacturing are analyzed, including the deformation scale and deformation temperature induced brittle-to-ductile transition, and the reverse transition induced by grain size and strain rate. A discussion is arranged to explore the mechanisms of BDT and how to improve the machinability based on the BDT. It is proposed that the mutual transition between brittleness and ductility results from the competition between the occurrence of plastic deformation and the propagation of cracks. The brittleness or ductility of machined material should benefit a specific manufacturing process, which can be regulated by the deformation scale, deformation temperature and machining speed.