Ni 3Al/NiAl/Ni复合板组织性能及其薄壁构件反应成形一体化工艺研究  

Study on microstructure and properties of Ni 3Al/NiAl/Ni composite sheets and integrated process of reaction forming for thin-walled component

作　　者：郑闻睿 林鹏[1] 秦锦涛 殷宏亮 曹晓卿[1] ZHENG Wen-rui;LIN Peng;QIN Jin-tao;YIN Hong-liang;CAO Xiao-qing(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《塑性工程学报》2024年第1期34-40,共7页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51505323);山西省基础研究计划项目(20210302123117)。

摘　　要：针对Ni-Al金属间化合物材料成形困难问题,对Ni 3Al/NiAl/Ni复合板进行了组织性能与反应成形一体化工艺的研究。以Ni/Al箔材为试验材料,对1200℃,热压时长0.5、1、2和4 h条件下热压复合法得到的Ni 3Al/NiAl/Ni板进行微观组织表征与室温及高温(1000℃)条件下的单向拉伸试验。根据试验结果确定了在1200℃、1 h条件下热压反应的复合板具有较佳综合力学性能,室温条件下抗拉强度与伸长率分别为527.6 MPa和4.4%,1000℃高温条件下抗拉强度与伸长率分别为165.7 MPa、21.2%。进一步在该参数下进行反应成形一体化工艺的研究,制备得到了具有良好表面质量与尺寸精度的薄壁锥筒壳件。在薄壁锥筒壳件上取样进行微观组织与力学性能表征,发现其组织和力学性能与相同工艺条件下制备的复合板相近。Aiming at the forming difficulty of Ni-Al intermetallic compound materials,the microstructure and properties and integrated process of reaction forming for Ni 3Al/NiAl/Ni composite sheets were studied.Taking Ni/Al foil as the test material,the Ni 3Al/NiAl/Ni composite sheets obtained by hot pressing composite method at 1200℃and hot pressing time of 0.5、1、2 and 4 h was characterized by microstructure and uniaxial tensile tests at room temperature and high temperature(1000℃).According to the test results,the composite sheets have better comprehensive mechanical properties after hot pressing reaction at 1200℃for 1 h.The tensile strength and elongation at room temperature are 527.6 MPa and 4.4%,respectively;and the tensile strength and elongation at 1000℃are 165.7 MPa and 21.2%,respectively.Further research on the integrated process of reaction forming was carried out with these parameters,and the thin-walled conical cylinder shell with good surface quality and dimensional accuracy was prepared.The microstructure and mechanical properties of thin-walled conical cylinder shell were characterized by sampling,it is found that the microstructure and mechanical properties of thin-walled conical cylinder shell are similar to those of the composite sheets prepared under the same process conditions.

关 键 词：镍铝合金 反应成形一体化工艺 薄壁构件 

分 类 号：TG306[金属学及工艺—金属压力加工]