铸造态钛合金力学性能及抗弹性能研究
发布时间：2018-08-01 08:16
【摘要】：以铸造态钛合金β20C、TC4、TA15和TA18为研究对象,开展了以钛合金为面板、A3钢为背板的复合装甲抗弹性能试验、基于分离式Hopkinson Bar技术的动态压缩试验和室温条件下的准静态压缩和准静态拉伸试验。并对铸造态钛合金β20C、TC4、TA15和TA18抗弹性能的影响因素进行了对比与分析。结果发现:铸造态钛合金β20C的A3钢背板具有最小残余穿深值4.7 mm,分别比铸造态钛合金TC4、TA15和TA18低22%、37%和23%,且β20C的质量防护系数也相应有最大值2.61,表明β20C具有最佳抗弹性能;铸造态钛合金β20C的动态压缩强度、准静态抗压强度、准静态拉伸屈服强度和准静态抗拉强度值分别达1578、1474、1052和1101 MPa,各强度值在4种钛合金中均是最高的,表明动态强度及准静态强度对铸造态钛合金的抗弹性能的影响是决定性的;4种铸造态钛合金的冲击吸收功、动态塑性、临界断裂应变和断后伸长率则与抗弹性能呈现出一定的波动关系,表明冲击吸收功、动态塑性和准静态塑性对抗弹性能的影响是非决定性的;铸造态钛合金β20C靶板正面出现了尺寸为10 mm×12 mm的开坑现象,在4种铸造态钛合金中是最明显的,同时没有发现明显的剪切冲塞破环现象。
[Abstract]:Taking the cast titanium alloy 尾 20CZTC4TTA15 and TA18 as the research objects, the elastic resistance test of composite armor with titanium alloy as the panel plate and A 3 steel as the back plate was carried out. Dynamic compression test based on split Hopkinson Bar technique and quasi-static compression and quasi-static tensile test at room temperature. The influence factors of cast titanium alloy 尾 _ (20) C _ (4) C _ (4) TA _ (15) and TA18 were compared and analyzed. The results show that the minimum residual penetration depth of cast titanium alloy 尾 20C A3 steel back plate is 4.7 mm, which is 22 37% and 23% lower than that of cast titanium alloy TC4TTA15 and TA18, respectively. The mass protection coefficient of 尾 20C also has a maximum value of 2.61, which indicates that 尾 20C has the best elasticity resistance. The dynamic compressive strength, quasi-static tensile yield strength and quasi-static tensile strength of cast titanium alloy 尾 20C are 1578 / 1474 / 1052 and 1101 MPa, respectively. It is shown that the influence of dynamic strength and quasi-static strength on the elastic resistance of cast titanium alloys is decisive for the impact absorption work and dynamic plasticity of four cast titanium alloys. The critical fracture strain and post-break elongation show a certain fluctuation relationship with the elastic resistance, indicating that the impact absorption work, dynamic plasticity and quasi-static plastic resistance are indeterminate. The opening of 10mm 脳 12mm on the front of cast titanium alloy 尾 20C target plate is the most obvious in four kinds of cast titanium alloys, and no obvious phenomenon of shearing impingement and ring breaking has been found at the same time.
【作者单位】： 北京理工大学;
【基金】：教育部“新世纪优秀人才支持计划”(NCET-12-0051)
【分类号】：TG146.23
本文编号：2156923
[Abstract]:Taking the cast titanium alloy 尾 20CZTC4TTA15 and TA18 as the research objects, the elastic resistance test of composite armor with titanium alloy as the panel plate and A 3 steel as the back plate was carried out. Dynamic compression test based on split Hopkinson Bar technique and quasi-static compression and quasi-static tensile test at room temperature. The influence factors of cast titanium alloy 尾 _ (20) C _ (4) C _ (4) TA _ (15) and TA18 were compared and analyzed. The results show that the minimum residual penetration depth of cast titanium alloy 尾 20C A3 steel back plate is 4.7 mm, which is 22 37% and 23% lower than that of cast titanium alloy TC4TTA15 and TA18, respectively. The mass protection coefficient of 尾 20C also has a maximum value of 2.61, which indicates that 尾 20C has the best elasticity resistance. The dynamic compressive strength, quasi-static tensile yield strength and quasi-static tensile strength of cast titanium alloy 尾 20C are 1578 / 1474 / 1052 and 1101 MPa, respectively. It is shown that the influence of dynamic strength and quasi-static strength on the elastic resistance of cast titanium alloys is decisive for the impact absorption work and dynamic plasticity of four cast titanium alloys. The critical fracture strain and post-break elongation show a certain fluctuation relationship with the elastic resistance, indicating that the impact absorption work, dynamic plasticity and quasi-static plastic resistance are indeterminate. The opening of 10mm 脳 12mm on the front of cast titanium alloy 尾 20C target plate is the most obvious in four kinds of cast titanium alloys, and no obvious phenomenon of shearing impingement and ring breaking has been found at the same time.
【作者单位】： 北京理工大学;
【基金】：教育部“新世纪优秀人才支持计划”(NCET-12-0051)
【分类号】：TG146.23
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本文编号：2156923
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