高强度合金钢30CrMnMoRE/30CrMnSi的动态力学性能

贾宇; 刘彦; 梁晓璐; 郑腾

doi:10.11858/gywlxb.20170659

高强度合金钢30CrMnMoRE/30CrMnSi的动态力学性能

doi: 10.11858/gywlxb.20170659

贾宇^1,,
刘彦²,
梁晓璐¹,
郑腾^1,*,

1.
西安近代化学研究所, 陕西西安 710065
2.
北京理工大学机电学院, 北京 100081

详细信息

作者简介:
贾宇(1988-), 男, 助理工程师, 主要从事爆破战斗部研究.E-mail:jiayu_jiayu@foxmail.com

通讯作者:
郑腾(1975-), 男, 研究员, 主要从事侵彻、爆破类战斗部技术研究

中图分类号: O347.3
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出版历程
- 收稿日期: 2017-10-12
- 修回日期: 2017-12-25

Dynamic Compression Properties of 30CrMnMoRE and 30CrMnSi

JIA Yu^1
,,
LIU Yan²,
LIANG Xiaolu¹,
ZHENG Teng^{1,*
,}

1.
Xi'an Modern Chemistry Research Institute, Xi'an 710065, China
2.
College of Mechanical and Electrical Engineering, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 针对合金材料在高冲击作用下的力学响应，采用分离式Hopkinson压杆（SHPB）系统确定武器弹药中常用的高强度合金30CrMnMoRE和30CrMnSi在不同应变率下的动态应力-应变关系，得到其动态应力-应变曲线及屈服强度，并结合Johnson-Cook模型对其动态本构进行拟合。结果表明，两种材料的应力-应变关系、强度等参数表现出明显的应变率相关性，随着应变率的提升，材料得到进一步强化，30CrMnMoRE的动态强度提高约79%，30CrMnSi的动态强度提高约50%。
- 冲击 /
- 分离式霍普金森压杆 /
- 高应变率 /
- 本构模型
Abstract: We conducted tests on the dynamic stress-strain relationship of both 30CrMnMoRE and 30CrMnSi at different strain rates using the split Hopkinson pressure bar (SHPB) system to study the mechanical response of alloy metal under high impact, and obtained their dynamic stress-strain curves and yield strength.And combined with the Johnson-Cook model, we obtained the dynamic constitutive model of the two materials.The test results show that the stress-strain relationship and the strength parameters of the two steels have obvious strain rate dependence.With the increase of the strain rate, the dynamic strength of 30CrMnMoRE increased by about 79%, and that of 30CrMnSi increased about by 50%.
- impact /
- split Hopkinson pressure bar (SHPB) /
- high strain rate /
- constitutive model

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图 1 SHPB系统(1.子弹(撞击杆)；2.平行光源；3.光控继电器；4.振荡测速仪；5.入射杆；6.试件；7.应变片；8.透射杆；9.吸收杆；10.阻尼器；11.超动态应变仪；12.智能测速分析仪；13.数据处理系统)

Figure 1. Configuration of SHPB (1.Strike bar; 2.Source of parallel light; 3.Photorelay; 4.Velometer; 5.Incident bar; 6.Sample; 7.Strain gage; 8.Transmitted bar; 9.Momentum trap bar; 10.Buffer; 11.Amplifier; 12.Intelligent speed analyzer; 13.Data processing system)

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图 2 试件应力随时间变化关系

Figure 2. Relationship between time and stress of test specimen

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图 3 Ø3 mm与Ø10 mm 30CrMnMoRE试件动态应力-应变关系

Figure 3. Stress-strain relation for Ø3 mm and Ø10 mm 30CrMnMoRE

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图 4 30CrMnMoRE材料动态应变率与屈服强度关系

Figure 4. Relation between strain rate and yield strength for 30CrMnMoRE

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图 5 Ø3 mm与Ø10 mm 30CrMnSi试件动态应力-应变关系

Figure 5. Stress-strain relation for Ø3 mm and Ø10 mm 30CrMnSi

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图 6 30CrMnSi材料动态应变率与屈服强度关系

Figure 6. Relation between strain rate and yield strength for 30CrMnSi

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图 7 仿真与实验结果对比

Figure 7. Comparison of simulation and experimental results

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表 1 30CrMnMoRE和30CrMnSi材料性能

Table 1. Material property of 30CrMnMoRE and 30CrMnSi

Material	σ_b/MPa	σ_s/MPa	δ₅/%	η/%
30CrMnMoRE	≥1 410	≥1 180	≥8	≥50
30CrMnSi	≥1 080	≥885	≥10	≥45

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表 2 试件设计

Table 2. Design of specimens

Material	Specimen diameter/mm	Specimen length/mm	Length-diameter ratio
30CrMnMoRE	10 3	5 1.5	0.5
30CrMnSi	10 3	5 1.5	0.5

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