轻合金大型复杂结构件制造基础研究立项报告

李晓谦　邓运来　杨合　李淑慧

摘要：本研究针对国内航空航天领域战略发展对轻质高强、高可靠性和功能高效化本体结构的紧迫需求，针对我国大型复杂高性能整体结构件制造技术发展严重滞后的现状和技术瓶颈，集材料科学、机械工程、飞行器设计等学科领域的知识于一体，开展交叉研究。围绕大型复杂构件非均匀塑变成形、热-力-界面耦合作用与流线组织演变、构件温成形的应力弛豫作用与析出状态形成、过饱和凝固成形的多能场作用与偏析调控三个关键科学问题，研究高性能轻合金大型复杂整体构件形/性一体化制造流程的基本规律，揭示构件/材料制造关键过程的宏/微/纳观结构演变的能量驱动与能量通道调控机理，探索极端服役条件下规格大型化、功能高效化构件制造原理和方法，建立独具特色的大型复杂整体构件制造过程中宏微纳多尺度能量通道与形性演变的多物理场调控原理和技术体系，实现铝、钛高性能轻合金大型复杂整体结构件制造技术的跨越，大幅度提升极端服役构件性能水平，推动我国先进制造技术的发展，有力地支撑国民经济发展与国家安全。

关键词：航空航天；交叉研究；大型复杂整体构件

Abstract：This project aimed at the urgent demand of domestic aerospace industry strategy development，which are light weight， high strength， high reliability and efficient function of body structure ， and it aimed at the critical backward situation and technical bottleneck of the manufacturing technology development in which large complex and high performance of monolithic component in our country.carry out cross-over study on conbining materials science， mechanical engineering，aircraft design and other disciplines etc.Around the three critical scientific problem for inhomogeneous plastic forming of large complex components，the coupling of thermal-mechanical-interface and streamline organization evolution， stress-relaxation effect of the component shape and precipitation-formation state， multi-functional field and segregation of supersaturated coagulation control， research the basic rules of the whole manufacturing process about large complex components of high-performance light alloy， revealed the energy drive and channel regulation mechanism of macro/micro/nano structure evolution in the key process of component/material manufacturing. whats more， manufacture principle and method was explored for Large-scale specification， function efficiency components in the extreme condition.its built up to a unique regulate and control principle and technical system of multi-physical fields in large-scale complex integral components of the manufacturing process of macro micro-nano multiscale energy channels and morphic evolution. The leapfrogging of large whole complex structure manufacturing technology was realized for the high-performance light alloy，for example，aluminum and titanium. the level of extreme service component performance was greatly enhanced， and promoted the development of advanced manufacturing technology in our country， it will be strongly support that the development of national economy and national security.

Keywords：Aerospace；Crossover study；Large and complex integral components