基本信息
项目批准号：51465044
申请代码：E0508
项目名称：IMC/Al功能(néng)梯度复合材料的搅拌摩擦增材制造、形成机理(lǐ)及力學(xué)行為(wèi)
项目负责人：黄春平
依托单位：南昌航空大學(xué)
研究期限：2015-01-01 至 2018-12-31
资助经费：50.0（万元）

项目摘要
中文(wén)摘要：
金属间化合物(wù)增强铝基（IMC/Al）功能(néng)梯度复合材料满足了耐磨部件要求轻量化、表面高耐磨，而整體(tǐ)要求高韧性和疲劳性能(néng)的需要，但目前的制备工艺对材料的结构调控较為(wèi)困难。本项目结合搅拌摩擦加工、增材制造技术特点和功能(néng)梯度材料的结构特点提出的搅拌摩擦增材制造技术為(wèi)原位合成IMC/Al功能(néng)梯度复合材料提供新(xīn)途径。利用(yòng)铝合金板和合金粉末作為(wèi)原始材料，采用(yòng)多(duō)步搅拌摩擦加工的方式，逐层制备出IMC/Al功能(néng)梯度复合材料，并形成纳米表层。 项目采用(yòng)对比试验研究、理(lǐ)论分(fēn)析计算的研究方法，研究材料的组织演化和梯度层的形成规律，并对材料的综合力學(xué)行為(wèi)进行分(fēn)析，揭示搅拌摩擦增材制造原位合成IMC/Al功能(néng)梯度复合材料中增强相的形成机理(lǐ)，把握反应过程中的组织演化规律，获得功能(néng)梯度复合材料结构-综合机械性能(néng)相关性规律，為(wèi)搅拌摩擦增材制造原位制备IMC/Al功能(néng)梯度复合材料的工业化应用(yòng)提供理(lǐ)论依据和技术基础。
英文(wén)摘要：
Intermetallic compounds reinforced aluminum matrix (IMC/Al)functionally graded material(FGM) can meet the needs of the wear-resistant components as a light weight & high strength & high wear resistancce in surface layer but high toughness & high fatigue performance in overall. However, the current manufacturing process is more difficult to control the microstructure. The project provides a new way to in-situ synthesis IMC/Al FGM, named friction stir additive manufacturing (FSAM) which combined with the technical advantages of friction stir processing & additive manufacturing and structural features of FGM. FGM has been produced layer by layer with using of Aluminum alloy plate and alloy powder as raw material.As a result, the nano-surface will form with rapid cooling of FSAM. With the method of comparative experiment and theoretical analysis & calculatio , the microstructural evolution and formation of gradient layer have been investigated, the mechanical behavior of IMA/Al FGM has been analyzed. The other purpose of the project is revealing in-situ synthesis mechanism of IMA/Al FGM via friction stir additive manufacturing, understanding the microstructure evolution of the reaction process. The success of the research can provided a theoretical basis for the industrial application of FSAM in-situ preparation intermetallic compounds reinforced aluminum matrix FGM composites.
                                                                                                                                                                              ——来自https://kd.nsfc.gov.cn/