变形量对冷径向锻造身管力学性能各向异性的影响  

Influence of Forging Ratio on Mechanical Properties Anisotropy of Precision Forged Barrel

作　　者：徐宝池 杨晨[1] 樊黎霞[1] 扶云峰 任青松 董雪花[3] XU Baochi;YANG Chen;FAN Lixia;FU Yunfeng;REN Qingsong;DONG Xuehua(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Chongqing Jianshe Industry(Group)Co.,Ltd.,Chongqing 400054,China;School of Science,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]重庆建设工业(集团)有限责任公司,重庆400054 [3]南京理工大学理学院,南京210094

出　　处：《兵器装备工程学报》2020年第5期81-85,共5页Journal of Ordnance Equipment Engineering

基　　金：国防基础科研项目(JCKY2016209A002)。

摘　　要：研究了变形量对5.8 mm口径冷径向锻造身管力学性能各向异性的影响。实验结果表明:经冷径向锻造身管力学性能呈现明显的各向异性,较大变形量(38%和41%)成形身管的力学性能各向异性程度低于较小变形量(27%和34%)成形身管;有限元和织构分析结果表明:身管成形过程中存在较大剪切应力,受剪切应力的影响形成剪切织构({112}〈111〉和{110}〈001〉),弱化了身管的轴向强度;变形量为41%时,身管延伸率各向异性程度明显增大,导致成形身管内部容易产生轴向裂纹缺陷。The influence of forging ratio on the anisotropy of mechanical properties of 5.8 mm precision forged barrel was studied by compression test,texture analysis and finite element analysis.The compression test results show that the mechanical properties of the barrel material after cold radial forging show obvious anisotropy,and the degree of the mechanical properties anisotropy of the barrel formed with larger forging ratio(38%and 41%)is lower than that of the barrel formed with smaller forging ratio(27%and 34%).There are large shear stresses in the process of body forming,and shear texture({112}〈111〉and{110}〈001〉)is formed under the influence of shear stress,which weakens the axial strength performance of barrel material.When forging ratio is the largest(41%),the elongation anisotropy of barrel material increases obviously,which will lead to the axial crack defects in the inner part of barrel tube.

关 键 词：径向锻造 变形量 各向异性 织构 

分 类 号：TJ401.4[兵器科学与技术—火炮、自动武器与弹药工程]