The Microstructure Optimization of the H-shape Forgings Based on Preforming Die Design
The microstructure optimization design method of the forging process is proposed. The optimization goal is the fine grain size and homogeneous grain distribution of the forgings. The optimization object is the preforming die shape. The microstructure optimization code is developed using the micro-genetic algorithm and the finite element method. The two forming steps including the preforming process and the final forging process of the H-shape forgings are analyzed using the self-developed code. The optimization results show that the fine grain size and the homogenous grain distribution can be achieved by controlling the shape of the preforming die. The samples with the same size as optimization are preformed and then forged to the desired H-shape forgings under the same deformation conditions as optimization. Micrographs in the symmetry section of samples show that the grain sizes of the forgings are almost coincident with the optimization results.
forging microstructure optimization preform design
Jing GUAN Guangchun WANG Tao GUO Libin SONG Guoqun ZHAO
School of Materials Science and Engineering, Shandong University, Jinan 250061
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）