有色金属科学与工程2025，Vol.16Issue(1)：85-95,11.DOI:10.13264/j.cnki.ysjskx.2025.01.010
Ni、Si元素的添加对Cu-7Sn合金组织及力学性能的影响
Effect of Ni and Si additions on the microstructure and mechanical properties of Cu-7Sn alloy
摘要
Abstract
On the basis of the traditional solid solution strengthened Cu-7Sn alloy,the alloy phase diagram and thermodynamic calculation,combined with the first nature principle results for the design of the alloy composition and heat treatment regime,the physical phase composition of the alloy under different temperature conditions was investigated and experimentally characterized.By analyzing the phase compositions of the alloys with different compositions and temperatures,a new precipitation-strengthened Cu-7Sn-1Ni-0.4Si alloy was designed and prepared.The results show that the Cu-7Sn-1Ni-0.4Si alloy prepared by the melt casting method with Ni and Si elements as alloying elements according to the phase diagrams and first principle calculations can successfully introduce the δ-Ni2Si precipitation phase into the alloy after the solution treatment at 850℃for 3 h and the aging treatment at 400℃for 5 h,which can significantly enhance the mechanical properties of the alloy.The Vickers hardness,tensile strength and elongation of the alloy can reach 160.7 HV,550 MPa and 18%,respectively.关键词
Cu-7Sn合金/热处理/析出相/力学性能Key words
Cu-7Sn alloy/heat treatment/precipitated phase/mechanical properties分类
金属材料引用本文复制引用
樊文欣,高阳,王鹏飞,陈燕,原霞,彭丽军,付亚波,张忠涛..Ni、Si元素的添加对Cu-7Sn合金组织及力学性能的影响[J].有色金属科学与工程,2025,16(1):85-95,11.基金项目
山西省基础研究计划项目(20210302124428) （20210302124428）
山西省研究生教育创新项目(2022Y606) （2022Y606）
