Hf基非晶合金夹芯结构长杆弹的侵彻行为

林琨富; 张先锋; 陈海华; 熊玮; 刘闯; 张全孝

doi:10.11883/bzycj-2020-0181

Hf基非晶合金夹芯结构长杆弹的侵彻行为

doi: 10.11883/bzycj-2020-0181

1.
南京理工大学机械工程学院，江苏南京 210094
2.
中国兵器科学研究院宁波分院，浙江宁波 315103

基金项目: 国家自然科学基金(11790292)；超高速碰撞研究中心开放基金(20200106)；江苏省研究生科研创新计划(KYCX19_0321)

详细信息

作者简介:
林琨富(1994－　)，男，硕士研究生，linkunfu@njust.edu.cn

通讯作者:
张先锋(1978－　)，男，博士，教授，博导，lynx@njust.edu.cn

中图分类号: O385
计量
- 文章访问数: 560
- HTML全文浏览量: 263
- PDF下载量: 86
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-03
- 修回日期: 2020-11-05
- 网络出版日期: 2021-02-02
- 刊出日期: 2021-02-05

Penetration behaviors of Hf-based amorphous alloy jacketed rods

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Ningbo Sub-academy of The National Weapons Science Research Academy, Ningbo 315103, Zhejiang, China

摘要

摘要: 为研究Hf基非晶合金的变形行为及高速侵彻性能，分别开展了Hf基非晶合金材料静动态力学性能和Hf基非晶合金夹芯结构长杆弹高速侵彻45钢靶体试验研究，并与45钢夹芯长杆弹侵彻结果进行对比。研究发现：Hf基非晶合金具有较高的断裂强度，断裂时伴随有能量释放现象；Hf基非晶合金夹芯长杆弹侵彻钢靶过程可分为3个阶段：开坑、夹芯结构侵彻和剩余弹体侵彻。Hf非晶合金在侵彻过程中发生了明显的释能反应，显著地增强了弹体毁伤效应，扩大了侵彻弹孔直径，增加了弹体侵彻深度和弹孔体积。在高速冲击下，Hf基非晶合金夹芯长杆弹表现出优异的侵彻性能，可以为非晶合金材料在高效毁伤领域的应用提供新思路。
- 夹芯弹 /
- 长杆弹 /
- 侵彻行为 /
- 非晶合金 /
- 释能反应 /
- Hf
Abstract: Amorphous alloys have attracted wide interest from from domestic and foreign research scholars in recent years. In order to explore the deformation behavior and high-speed penetration performance of Hf-based bulk amorphous alloys, the static (10⁻³ s⁻¹) and dynamic (10²−10⁴ s⁻¹) mechanical properties tests of Hf-based bulk amorphous alloy materials were carried out. Based on the structure of the jacketed rod, penetration experiments were performed as well. Two kinds of jacketed rod projectiles, in Hf-based bulk amorphous alloy and 45 steel, penetrated into the semi-infinite 45 steel targets with velocities in the range of 1000−1500 m/s. The experimental results show that the Hf-based bulk amorphous alloy has a high fracture strength of 1.69 GPa under quasi-static compression (10⁻³ s⁻¹), and 1.15 GPa under dynamic compression (10²−10⁴ s⁻¹). The fracture of Hf-based bulk amorphous alloy is accompanied by a energy release phenomenon. The process of Hf-based bulk amorphous alloy jacketed rod projectiles penetrating the steel target can be divided into three stages: pit opening stage, penetration stage of the jacketed rod structure and remaining projectile penetration. The Hf amorphous alloy has an obvious energy-releasing reaction during the penetration process. The energy-releasing reaction of the Hf-based bulk amorphous alloy enhanced the damage effect of the projectile significantly by enlarging the diameter of the penetration bullet hole, and increasing the penetration depth and bullet hole volume. Compared with the 45 steel jacketed rod within the tested kinetic energy range, the range of increase in the diameter of the penetration single hole, the penetration depth and the volume of penetration bullet holes are 14.4%−23.8%, 5.2%−13.1%, and 12.9%−54.3%, respectively. In conclusion, the Hf-based bulk amorphous alloy jacketed rod projectile exhibits excellent penetration performance, which can provide new ideas for the application of amorphous alloy materials in the field of efficient damage.
- jacketed rod /
- long rod projectile /
- penetration behavior /
- amorphous alloy /
- energy-releasing reaction /
- Hf

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图 1 准静态压缩试验试件断裂过程

Figure 1. High-speed video photographs in the quasi-static compression experiment

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图 2 试件准静态压缩断裂前后状态

Figure 2. States of the specimen before and after quasi-static compression fracture

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图 3 试件准静态压缩的真实应力-真实应变曲线

Figure 3. True stress-true strain curves of the quasi-static compression of the specimens

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图 4 Hf基非晶合金的动态应力-应变曲线

Figure 4. Dynamic stress-strain curves of Hf-based amorphous alloys at different strain rates

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图 5 Hf基非晶合金材料断裂强度-应变率曲线

Figure 5. Strain rate response curve of Hf-based amorphous alloy materials

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图 6 SHPB试验后Hf基非晶合金试件状态

Figure 6. State of Hf-based amorphous alloy sample after SHPB experiment

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图 7 夹芯结构长杆弹示意图(单位：mm)

Figure 7. Schematic diagram of the jacketed rod projectiles (unit: mm)

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图 8 实验布局示意图

Figure 8. Schematic diagram of the experimental setup

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图 9 弹体飞行及着靶姿态的高速摄像

Figure 9. High-speed video photography of the projectiles flight and landing postures

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图 10 弹体侵彻靶体的高速摄像

Figure 10. High-speed video photographs of the projectiles penetrating the targets

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图 11 靶体剖面

Figure 11. Sections of the targets

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图 12 Hf-W夹芯长杆弹弹孔剖面

Figure 12. Cross-section of Hf-W (1180 m/s)

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图 13 Steel-W夹芯长杆弹弹孔剖面

Figure 13. Cross-section of Steel-W (1196 m/s)

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图 14 夹芯结构长杆弹侵彻弹孔轮廓

Figure 14. Penetrating ballistic outline at different speeds

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图 15 长杆弹侵彻深度和撞击动能的关系曲线

Figure 15. Relation curves of kinetic energy and penetration depth of both projectiles

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图 16 长杆弹弹孔体积和撞击动能的关系曲线

Figure 16. Relation curves of kinetic energy and total penetration volume of both projectiles

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图 17 长杆弹最大弹孔直径和撞击动能的关系

Figure 17. Relation curves of kinetic energy and the maximum penetration diameter of both projectiles

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表 1 准静态压缩实验数据

Table 1. Quasi-static compression experimental data

编号	压缩速度/(mmmin⁻¹)	尺寸/(mmmm)	最大载荷/kN	应变率/s⁻¹	抗压强度/GPa
1	0.36	$\varnothing $3.98×5.98	20.6	1×10⁻³	1.53
2	0.36	$\varnothing $3.96×6.00	22.4	1×10⁻³	1.68
3	0.36	$\varnothing $3.94×6.00	24.0	1×10⁻³	1.80
4	0.36	$\varnothing $4.00×6.02	21.1	1×10⁻³	1.58
5	0.36	$\varnothing $4.02×6.02	25.2	1×10⁻³	1.88

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表 2 SHPB实验数据

Table 2. SHPB experimental data

编号	速度/(m∙s⁻¹)	尺寸/(mmmm)	应变率/s⁻¹	断裂强度/MPa
1	10.4	$ \varnothing $4.02×6.00	550	1 470
2	12.3	$ \varnothing $4.00×5.98	760	1 410
3	13.7	$ \varnothing $4.02×5.98	890	1 300
4	14.8	$ \varnothing $4.02×6.02	980	1 280
5	16.2	$ \varnothing $4.02×6.00	1170	1 260
6	16.4	$ \varnothing $4.02×5.98	1200	1 250
7	17.5	$ \varnothing $4.02×6.00	1370	1 220
8	18.5	$ \varnothing $4.02×6.02	1450	1 280
9	18.9	$ \varnothing $4.02×6.02	1580	1 150

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表 3 弹体材料参数

Table 3. Material parameters of the projectile

材料	密度/(g∙cm⁻³)	HRC硬度	强度/MPa
Hf基非晶合金	8.10	50	1 600
调质处理45钢	7.85	50	562
钨合金^[22]	17.6	35.5	1 250

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表 4 实验后靶体成坑参数

Table 4. Crater parameters of targets

弹体材料	编号	弹体速度/(m∙s⁻¹)	弹体动能/kJ	侵彻深度/mm	弹孔体积/cm³	弹孔直径/mm
Hf-W	9	1 041	70.44	41.49	21.14	30.24
	8	1 088	76.94	44.66	21.99	29.51
	1	1 180	90.51	52.51	25.42	31.81
	4	1 221	96.90	54.25	27.86	32.47
	5	1 264	103.85	62.57	32.47	32.82
	7	1 347	117.94	69.28	40.00	32.56
	6	1 486	143.53	79.00	52.36	34.62
Steel-W	17	1 000	66.50	34.05	11.82	23.33
	11	1 184	93.22	51.26	22.86	27.57
	13	1 196	95.12	52.02	23.71	26.68
	14	1 276	108.27	60.05	29.85	28.10
	15	1 460	141.75	73.04	42.39	30.31
	16	1 464	141.95	74.06	44.81	30.14

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