Miroscale Deformation in a Two-phase Ti-alloy Studied Using Strain Mapping Techniques
The purpose of this study is to investigate the deformation at the micostructural scale in a twophase titanium alloy. Detailed in situ deformation studies have been carried out on lamellar and bilamellar microstructures of Ti-6246. Digital Image Correlation was used to obtain the strain maps from optical images taken during loading where high localised strain was mainly observed close to grain boundary a and in a orientations favourably orientated for slip. It was found on further loading that high strain areas also coincided with slip traces. Several of these slip traces transferred across grain boundary a regardless of the difference in neighbouring orientations. For further clarification CPFEM was used to predict the deformation by creating a virtual microstructure from the EBSD data. Predicted strain maps were then compared to those measured using DIC. Furthermore, studies of the ai ,a2 and a3 slip will be carried out using EBSD and TEM to clarify why slip occurs in some regions of favourable orientations more than others.
Deformation slip Tir6246 digital image correlation
Rebecca Sandala Joao Quinta da Fonseca Michael Preuss David Rugg Kate Fox
Manchester Materials Science Centre, Grosvenor street, Manchester Ml 7HS, U. K RoUsRoyce pic,Elton Road,Derby DE24 8EG ,U. K
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
909-913
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）