Paper Title:
Predeformation Effects on Shear Response and Microstructure in Pure Titanium-TA2
  Abstract

Adiabatic shear properties of pure titanium-TA2 have been investigated using specially designed specimen in a Hopkinson pressure bar at high strain rate of 103s- 1. Microstructural characteristics was investigated using scanning electrion microscopy as well as transmission and high resolution transmission electrion microscopy .The results showed that the shear stress and adiabatic sensitivity for rolled 45% TA2 are higher than forged TA2. Comparing the adiabatic shear bands (ASB) both in the forged and rolled TA2, no evidence in morphology alteration was found except to shear band widths. The transmission electron micrograph of the ASB in forged and rolled TA2 showed the grain size reduction from ~20μm to 200nm. No deformation twins have been observed in ASB. The selected area electron diffraction patterns of the ASB showed reflections of multiple grains, forming discontinuous rings which can be indexed as h.c.p. structure of α-Ti. This indicates that the ASB consists of fine grains of α-Ti and the α-Ti→ β-Ti transformation did not occur.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1409-1412
DOI
10.4028/www.scientific.net/MSF.546-549.1409
Citation
S. H. Li , F. C. Wang, C. W. Tan, Z. Y. Chen, Z. Sun, "Predeformation Effects on Shear Response and Microstructure in Pure Titanium-TA2", Materials Science Forum, Vols. 546-549, pp. 1409-1412, 2007
Online since
May 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yi Xia Yan, Xi Cheng Huang, Wen Jun Hu
Abstract:In this work, LS-DYNA program was adopted to simulate the loading process of Vanadium Alloy specimen conducted on the Split Hopkinson...
1630
Authors: Chun Zheng Duan, Liang Chi Zhang, Hai Yang Yu, Min Jie Wang
Abstract:Adiabatic shear banding during high speed machining is important to understand material removal mechanisms. This paper investigates the...
321
Authors: Chun Zheng Duan, Wei Sen Kong, Zhao Xi Wang, Min Jie Wang
Abstract:To study the microstructure of white band is helpful for revealing formation mechanism of serrated chip. This paper investigates the...
1292
Authors: Yu Zhang, Hong Guan, Zhi Guo Gao
Chapter 5: Metal Alloy Materials
Abstract:Split Hopkinson pressure bar setup was used as experimental method for dynamic impacted testing at 573K at the strain rate of 7030s-1. The...
1023
Authors: Kun Sun, Yuan Xu, Jin Hao Liu
Chapter 03: Metallic Materials
Abstract:Dynamic shearing high strain-rate experiments on three types of titanium alloy have been carried out by using a modified split Hopkinson bar....
312