钛合金塑性成形关键技术进展(英文)  

Review on Development of Key Technologies in Plastic Forming of Titanium Alloy

作　　者：杨合[1] 武川[1] 李宏伟[1] 樊晓光[1] 张大伟[1] 吉喆[1] 

机构地区：[1]西北工业大学材料学院国家凝固重点实验室,陕西西安710072

出　　处：《中国材料进展》2011年第6期6-13,62,共8页Materials China

基　　金：Natural Science Foundation for Key Program( 50935007 ) ;Natural Science Foundation (50805121); National Basic Research Program of China (2010CB731701);Foundation for Fundamental Research of Northwestern Polytechnical University in PR China (NPU-FFR-JC20100229);Research Fund of the State Key Laboratory of Solidification Processing of Northwestern Polytechnical University in PR China (27-TZ-2010 ); the 111 Project (B08040)

摘　　要：综述了钛合金塑性成形关键技术的发展状况。重点介绍了成形与微观组织演化的研究与发展。在成形方面,主要讨论了省力成形技术在钛合金大型复杂构件成形中的应用,并给出了相关的实例,如钛合金构件的等温成形、连续/间断局部加载成形等;讨论了精确成形技术中的回弹控制与工艺优化等关键问题;在缺陷控制技术方面,主要讨论了如何控制裂纹出现及充填不满等问题;在微观组织演化方面,首先讨论了微观组织的演化机制,如织构与组织形态的演化;其次,讨论了微观组织演化的几种数值建模方法,如内变量法、晶体塑性理论及元胞自动机模型。最后,提出了钛合金构件塑性成形技术领域目前存在的问题与挑战。Development of key technologies in plastic forming of titanium alloys is reviewed, focusing on two essentially important aspects, that is, shape forming and microstructure control. Force-saving plastic forming technologies for shape forming are discussed on their applications in manufacturing large-scale complex-shaped titanium components. Some samples of isothermal forming and continuous/intermittent local loading forming of titanium components are presented and discussed. Moreover, springback control and preform optimization are discussed as the important aspects of precision forming technology, and fracture control and undeffill control approaches are discussed as aspects of defects control technology as well. In review of microstructure control technologies, mechanism and rules of microstructure evolution, for instance, the evolutions of texture and morphology, are discussed at first, and then several representative numerical modeling approaches, such as internal variables modeling, crystal plasticity modeling and cellular automata modeling, are discussed. In the end, trends, challenges and developments in plastic forming of titanium alloy are presented.

关 键 词：钛合金 等温局部加载 大型复杂构件 回弹控制 工艺优化 内变量法 晶体塑性有限元 元胞自动机 

分 类 号：TG146.23[一般工业技术—材料科学与工程]