Constitutive modeling of ultra?fine?grained titanium flow stress for machining temperature prediction

作     者：Jinqiang Ning Vinh Nguyen Yong Huang Karl T.Hartwig Steven Y.Liang 

作者机构：George W.Woodruff School of Mechanical EngineeringGeorgia Institute of Technology801 Ferst DriveAtlantaGA 30332USA Department of Mechanical and Aerospace EngineeringUniversity of Florida231 MAE-AP.O.Box 116250GainesvilleFL 32611USA Department of Mechanical EngineeringTexas A&M University3123 TAMUCollege StationTX 77843?3123USA 

出 版 物：《Bio-Design and Manufacturing》 (生物设计与制造（英文）)

年 卷 期：2019年第2卷第3期

页      码：153-160页

摘      要：This work investigates the machining temperatures of ultra-fine-grained titanium(UFG Ti),prepared by equal channel angular extrusion,through analytical *** Ti has great usefulness in biomedical applications because of its high mechanical strength,sufficient manufacturability,and high *** temperatures were predicted using a physics-based predictive model based on material constitutive relation and mechanics of the orthogonal cutting *** minimization between the stress calculated using Johnson–Cook constitutive model and the same stress calculated using mechanics model yields the estimation of machining temperatures at two deformation *** agreements are observed upon validation to the values reported in the *** machinability of UFG Ti is investigated by comparing its machining temperature to that of Ti–6Al–4V alloy under the same cutting *** lower temperatures are observed in machining UFG *** computational efficiency of the presented model is investigated by comparing its average computational time(~0.5 s)to that of a widely used modified chip formation model(8900 s)with comparable prediction *** work extends the applicability of the presented temperature model to a broader class of materials,specifically ultra-fine-grained *** high computational efficiency allows the in situ temperature prediction and optimization of temperature condition with process parameters planning.

主 题 词：Ultra-fine-grained titanium Analytical modeling High computational efficiency Johnson–Cook model Cutting mechanics 

学科分类：0710[理学-生物科学类] 0831[工学-公安技术类] 0817[工学-轻工类] 08[工学] 0807[工学-电子信息类] 0805[工学-能源动力学] 080502[080502] 0802[工学-机械学] 0836[0836] 0811[工学-水利类] 

核心收录：

D　O　I：10.1007/s42242-019-00044-9

馆 藏 号：203727165...