摘要
研究了含Fe量和时效对Mn-Cu阻尼合金力学性能的影响。借助多功能内耗仪分析了合金的阻尼性能;通过拉伸试验研究了力学性能;采用光学电镜观察金相组织;借助X射线衍射仪分析了Fe原子所引起的晶格畸变;借助扫描电镜观察了试样的断口形貌。结果表明,Fe元素的添加会导致阻尼性能减小。同时,固溶Fe导致晶格畸变和晶粒细化,改善了合金的力学性能。经时效处理,合金强度明显提高,伸长率稍有降低。所有材料的断裂都为韧性断裂。在满足实际工程需求的前提下可通过添加Fe元素和进行时效,以牺牲部分阻尼性能来提高Mn-Cu合金的力学性能。
The effects of Fe content and aging on the mechanical properties of Mn-Cu damping alloys were investigated. The damping capacity of the alloy was analyzed by inverted torsion pendulum. The mechanical property was studied by tensile test. The metallographic structure was observed by optical microscope. The lattice distortion due to Fe addition was analyzed by XRD. And the fracture morphology of the sample was observed by SEM. The results show that the damping capacity decreases by adding Fe atom in the alloys. In addition, Solid-soluted Fe atoms cause the lattice distortion and grain refinement, and the mechanical properties of the alloy improve. After aging treatment, the strength of the alloy significantly improves and the elongation decreases slightly. The fracture of the material is ductile fracture. Thus, the mechanical properties of Mn-Cu alloys improve by the addition of Fe atoms and aging treatment at the expense of partial damping capacity on the demand of actual engineering.
出处
《热加工工艺》
CSCD
北大核心
2017年第14期51-53,57,共4页
Hot Working Technology
基金
国家大学生创新创业训练计划项目(201510613005)
关键词
铁含量
时效处理
力学性能
晶格畸变
韧性断裂
Fe content
aging treatment
mechanical property
lattice distortion
ductile fracture
