Abstract
A study of the friction coefficients is presented for TC4 titanium alloy at high temperature deformation using ring compression test and finite element (FE) simulation. FE simulations were used to derive the friction calibration curves, and a series of ring compression tests were carried out on the conditions of glass lubricant and dry friction to constitute the relationship between reduction in inner diameter of ring and reduction in height. It is found that the friction coefficients of TC4 titanium alloy for glass lubricant and dry conditions are determined to be about 0.32 and 0.58, respectively, which are in agreement with research results at home and abroad. The method that deriving the friction calibration curves using FEM, is not only superior to analytical methods, which can not consider the characteristics of materials, properties of touched surfaces and influence of temperature and strain rate on deformation, but also a special effectively method to determine the friction coefficients at the interface of die/workpiece during high temperature deformation.
| Original language | English |
|---|---|
| Pages (from-to) | 23-26+31 |
| Journal | Cailiao Gongcheng/Journal of Materials Engineering |
| Issue number | 6 |
| State | Published - Jun 2011 |
Keywords
- Calibration curve
- Dry friction
- Friction coefficient
- Glass lubricant
- Ring compression test