本论文对基于快速原型技术的净成形铸造中存在的主要缺陷进行了系统研究。
ABSTRACT the main defects in net shape casting technology based on rapid prototyping technology are studied systematically in the paper.
奥斯卡首先在铸造过程中成形。
金属的铸造、塑性成形、热处理等过程会使晶粒的尺寸大小、取向分布、形状等发生一定的变化，产生不同的微结构。
During the casting, plastic forming, and hot processing, the sizes, orientation distributions, and boundary structures of the crystallites change and produce various microstructures.
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