Abstract
The performance of products manufactured by deformation of materials can be deteriorated by unfavorable microstructure abnormality-related defects. In this chapter, a systematic introduction to the type of defects in deformation-based materials processing is presented. Several typical kinds of microstructure abnormality-related defects, such as undesired deformation texture, unexpected grain morphology, dissatisfactory phase component, etc., are described and their influential factors as well as root causes are also discussed. In addition, the methods of multiscale modeling and numerical simulation of microstructure evolution in deformation-based material processing are delineated. Based on the in-depth understanding of microstructure defects and the multiscale simulation, the main approaches for process design and real-time control of deformation for defect-free manufacturing are described. Finally, taking tube metal rolling and bulk metal forging as two typical instances, the multiscale modeling, prediction and control of deformation and microstructure are systematically presented.
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