重庆科技大学学报（自然科学版）2025，Vol.27Issue(2)：39-45,7.DOI:10.19406/j.issn.2097-4531.2025.02.005
晶粒尺寸对黄铜夏比冲击性能的影响
Effect of Grain Size on Charpy Impact Properties of Brass
摘要
Abstract
Brass samples with different crystal structures were prepared by multi-directional hot forging and annea-ling processes,and relevant impact absorption energy data were obtained by conducting charpy impact tests on them.The results indicate that when the grain size of brass samples is around 0.07,2.00,32.50 μm,the corre-sponding impact absorption energies are 3.37,5.25,6.83 J.After multi-directional hot forging treatment,a large number of dislocations will be introduced into the interior of brass material,and plug deposits will occur inside the grains and near the grain boundaries.Brass will undergo hardening and is more prone to cracking when subjected to external loads.The grain size distribution of brass material treated with multi-directional hot forging and+500℃is uniform.Under an external load,the fracture surface of this impact specimen is mainly ductile fracture,with a large number of toughness dimples inside,which performs the best in impact testing.关键词
多向热锻/晶粒尺寸/冲击功/位错塞积/韧窝Key words
multi-directional hot forging/grain size/impact work/dislocation plugging/dimple分类
金属材料引用本文复制引用
李凡,刘克张,王安恒,王泽鹏,胡兴涛,田磊磊..晶粒尺寸对黄铜夏比冲击性能的影响[J].重庆科技大学学报（自然科学版）,2025,27(2):39-45,7.基金项目
安徽信息工程学院青年科研基金项目"中小型飞机非对称截面航空铝型材弯扭回弹机理及低空经济产业化研究"(24QNJJKJ016) （24QNJJKJ016）
