Microstructural approach to equal channel angular processing of commercially pure titanium——A review

作     者：Peiman Shahbeigi Roodposhti Nasim Farahbakhsh Apu Sarkar Korukonda Linga Murty Peiman Shahbeigi ROODPOSHTI;Nasim FARAHBAKHSH;Apu SARKAR;Korukonda Linga MURTY

作者机构：North Carolina State University 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2015年第25卷第5期

页      面：1353-1366页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Project(DMR-0968825)support by National Science Foundation Through Grant 

主　　题：equal channel angular pressing(ECAP) commercially pure titanium(CP-Ti) backpressure channel angle curvature angle pressing speed 

摘      要：A review on severe plastic deformation（SPD） technique of equal channel angular pressing（ECAP） process of commercially pure titanium（CP-Ti） alloys was presented with a major emphasize on the influence of ECAP parameters that include channel and curvature angles, processing route, temperature of operation, pressing speed, internal heating, number of pass through the die and back pressure. Various ECAP characteristics such as microstructure, strain inhomogeneity and mechanical properties are considered to achieve the maximum homogeneity, equilibrium grain refinement and mechanical improvement of CP-Ti. Investigations show that a pressing speed of 1-3 mm/s at 450 °C with route BC along with channel and curvature angles of 90° and 20° respectively with backpressure can lead to the most homogeneous ultrafine microstructure.