基本信息
项目批准号：51675270
申请代码：E0509
项目名称：SiCp/Al复合材料搅拌摩擦连接-铣削复合加工机理(lǐ)研究
项目负责人：
左敦稳
依托单位：
南京航空航天大學(xué)
研究期限：2017-01-01 至 2020-12-31
资助经费：62.0（万元）
项目摘要
中文(wén)摘要：
随着我國(guó)航天技术的发展，传统的连接技术已不能(néng)满足火箭发动机颗粒增强铝基复合材料（SiCp/Al）主承力构件的研制与生产需要，先进的搅拌摩擦连接（FSJ）技术正受到广泛关注。但SiCp/Al的FSJ连接完整性以及后续铣削加工效率仍是亟需解决的瓶颈问题。本项目提出FSJ-铣削复合加工创新(xīn)思路，在连接的同时完成铣削加工，显著提高加工效率与质量。针对这一新(xīn)工艺，本项目拟分(fēn)别开展FSJ-铣削复合加工过程热源模型及温度场研究、复合加工工具研制、FSJ-铣削复合加工机理(lǐ)分(fēn)析以及复合加工获得的接头失效机理(lǐ)研究，解决该工艺中连接區(qū)域的能(néng)量耗散机制、工具性能(néng)演变规律以及接头失效机理(lǐ)等科(kē)學(xué)问题，从而為(wèi)优化SiCp/Al复合材料FSJ-铣削复合加工工艺提供理(lǐ)论基础，為(wèi)我國(guó)先进火箭发动机主承力构件研制和生产提供技术支持。
英文(wén)摘要：
With the development of our aerospace technology, the traditional joining technology can not yet meet the needs of manufacturing the scheme structure parts for advanced rocket engines made of SiC particle reinforced aluminum matrix composites (SiCp/Al), meanwhile much attention has been paid to an advanced joining technology called Friction Stir Joining (FSJ). However, the joining integrity and the after milling efficiency when FSJ is used for SiCp/Al joining are still unsolved neck problems. In this study, it is proposed to integrate FSJ and milling process, that is, the joining and the milling can be completed at the same time, so that not only the processing efficiency but also the quality can be improved greatly. Based on this new ideal, the research work will be carried out on the heat source modeling and temperature distribution, the design and manufacture of the integrated tool, the processing mechanism and the failure mechanism of the work processed by the new integrated processing method proposed. Through the research, such scientific questions will be made clear as the energy transfer mechanism in the processing area, the performance variation of the integrated tool and the failure mechanism of the work processed, so that it is possible to provide a theoretical foundation to the optimization of the integrated processing of FSJ-milling for SiCp/Al composites, furthermore to provide technical support to the manufacture of the advanced rocket engines made of SiCp/Al composites.
——来自https://kd.nsfc.gov.cn/
