Prediction of machining-induced phase transformation and grain growth of Ti-6Al-4 V alloy

被引：80

作者：

Pan, Zhipeng ^{[1
]}

Liang, Steven Y. ^{[1
]}

Garmestani, Hamid ^{[2
]}

Shih, Donald S. ^{[3
]}

机构：

[1] Georgia Inst Technol, Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[3] Boeing Res & Technol, St Louis, MO 63134 USA

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2016年 / 87卷 / 1-4期

关键词：

Machining; Phase transformation; Grain size; Dynamic recrystallization; Finite element; TITANIUM-ALLOYS; DYNAMIC RECRYSTALLIZATION; FATIGUE BEHAVIOR; CHIP FORMATION; HOT-WORKING; MICROSTRUCTURE; TEMPERATURES; SIMULATION; TI6AL4V; MODEL;

D O I：

10.1007/s00170-016-8497-4

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The high-speed machining process can significantly influence the microstructure of the machined surface in titanium alloy. A physics-based finite element method is proposed for the modeling of machining-induced phase transformation and grain size growth of Ti-6Al-4 V material. Prediction of the grain growth and phase transformation are obtained with the Johnson-Mehl-Avrami-Kolmogorov (JMAK) dynamic recrystallization model and Avrami model, respectively. A modified Johnson Cook flow stress model is embedded into the method to account for the phase transformation. The accuracy of the proposed method is validated with experimental data. Parametric studies are conducted to investigate the effects of the cutting speed and the feed rate on the microstructure change in machining.

引用

页码：859 / 866

页数：8

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