王文,韩鹏,席小鹏,王快社,彭湃,李天麒,乔柯,强菲.搅拌摩擦加工制备NiTip/WE43镁基复合材料[J].稀有金属材料与工程,2020,49(12):4050~4054.[Wang Wen,Han Peng,Xi Xiaopeng,Wang Kuaishe,Peng Pai,Li Tianqi,Qiao Ke,Qiang Fei.Preparation of NiTip/WE43 magnesium matrix composites by friction stir processing[J].Rare Metal Materials and Engineering,2020,49(12):4050~4054.]
搅拌摩擦加工制备NiTip/WE43镁基复合材料
投稿时间:2019-11-04  修订日期:2020-12-07
中文关键词:  搅拌摩擦加工  NiTi颗粒  镁基复合  微观组织  形状记忆效应
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      本研究提供了一种采用搅拌摩擦加工(FSP)制备NiTi颗粒增强WE43镁基复合材料的有效手段。采用SEM结合EDS对FSP试样的微观结构进行了研究,采用XRD进行了物相分析。结果表明,制备的复合材料具有形状记忆效应。较低的加工温度有效地阻止了NiTi颗粒与Mg基体在FSP过程中的界面反应。无论粒径大小,在FSP后,NiTi颗粒都均匀分布在Mg基体中。此外,与Mg基体相比,NiTi/WE43复合材料的屈服强度、极限拉伸强度和延伸率分别降低了33%、12%和18%。随着加入的NiTi颗粒尺寸的增大,该复合材料拉伸强度和延伸率均降低。复合材料的失效机理是颗粒之间的界面开裂以及增强颗粒的断裂。
Preparation of NiTip/WE43 magnesium matrix composites by friction stir processing
英文关键词:friction stir processing  NiTi particles  magnesium matrix composite  microstructure  shape memory effect
英文摘要:
      This study provided an effective technique of friction stir processing (FSP) to fabricate the NiTi particle reinforced WE43 magnesium (Mg) matrix composite. The microstructures of FSP specimens were examined by scanning electron microscopy (SEM) coupled with an energy-dispersive X-ray spectroscope (EDS). X-ray diffraction (XRD) was used for phase analysis. The results showed that the composite possessed the shape memory effect. The low processing temperature effectively prevented the interfacial reaction between the NiTi particles and Mg matrix during FSP. Regardless of particle size, the NiTi particles were homogeneously distributed in the Mg matrix. In addition, compared with the Mg matrix, the yield strength, ultimate tensile strength, and elongation of the NiTip/WE43 composite were reduced by 33%, 12%, and 18%, respectively. Both the tensile strength and elongation were decreased with increasing the size of as-received NiTi particles. The failure mechanism of the composite was interface debonding and the fracture of reinforced particles.
作者单位E-mail
王文 西安建筑科技大学 wangwen2025@126.com 
韩鹏 西安建筑科技大学 2426795380@qq.com 
席小鹏 西安建筑科技大学  
王快社 西安建筑科技大学 wangkuaishe888@126.com 
彭湃 西安建筑科技大学 382577414@qq.com 
李天麒 西安建筑科技大学  
乔柯 西安建筑科技大学 qiaokemarshal@126.com 
强菲 西安建筑科技大学  
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