热成形工艺参数对AA6082铝合金性能的影响
Saved in:
| Published in | 中国有色金属学报：英文版 Vol. 27; no. 11; pp. 2454 - 2463 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2017
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-6326 |
Cover
| Bibliography: | aluminium alloy AA6082; mechanical properties; strengthening model; hot forming 43-1239/TG The influences of process parameters on mechanical properties of AA6082in the hot forming and cold-die quenching(HFQ)process were analysed experimentally.Transmission electron microscopy was used to observe the precipitate distribution and to thus clarify strengthening mechanism.A new model was established to describe the strengthening of AA6082by HFQ process in this novel forming technique.The material constants in the model were determined using a genetic algorithm tool.This strengthening model for AA6082can precisely describe the relationship between the strengths of formed workpieces and process parameters.The predicted results agree well with the experimental ones.The Pearson correlation coefficient,average absolute relative error,and root-mean-square error between the calculated and experimental hardness values are0.99402,2.0054%,and2.045,respectively.The model is further developed into an FE code ABAQUS via VUMAT to predict the mechanical property variation of a hot-stamped cup in various ageing conditions. |
|---|---|
| ISSN: | 1003-6326 |