摘要
W-Cu合金结合了钨的高密度与铜的高动态延伸率,是一种前景广阔的药型罩材料.为获得性能优良的金属射流,提高油气井射孔弹的穿孔指标,对高致密均质W-Cu合金药型罩进行了研发.采用热化学工艺开发了不同含铜率(质量分数为10%,15%,20%,25%)的亚微米级超细W-Cu复合粉末,选W-25Cu型复合粉末并采用注射近净成型工艺技术制备了药型罩,将脱脂件在H_2气氛中烧结,峰值温度为1 200℃.采用SEM观察发现,烧结药型罩微观结构为亚微米级的W粒子均匀地分布在Cu基体中,其实测密度高达14.75 g/cm^3.拉伸试验表明,所开发的药型罩材料具有优良的力学性能,极限抗拉强度达到822.4 MPa,屈服强度达807.5 MPa,延伸率为1.18%.破甲性能测试实验证明,该类药型罩具有极其稳定的侵彻性能.
Tungsten-copper（W-Cu） is an attractive material for shaped charge liner due to the combination of the high density of W and the good plasticity of Cu.In order to improve penetration indexes of perforating charges by obtain metal jet with excellent performance,the W-Cu liner with high degree homogeneity and relative density was developed.A series of submicron W-Cu composite powder with different Cu content from 10%~25% has been developed by thermo-chemical process.With the utilization of metal injection moulding（MIM）,a type of near net-shaping shaped charge liner in W-25 Cu has been prepared.The debinded parts were then sintered in Hydrogen atmosphere at the peak temperature of 1 200 ℃.After being sintered,the measured density of W-25 Cu liner reached 14.75 g/cm^3.Tensile test indicated that the developed liner possessed excellent material mechanical properties,ultimate tensile strength 822.4 MPa,Yield strength 807.5 MPa,Elongation 1.18%.The resulted material observed by SEM has a microstructure with the submicron W particles distributing homogeneously in the Cu matrix.The ballistic test showed the shaped charge W-25 Cu liner by metal injection moulding of ultrafine composite powder with a high stable performance to penetrating into concrete target.
作者
吴焕龙
彭科普
向旭
王威
宋久鹏
WU Huanlong PENG Kepu XIANG Xu WANG Wei SONG Jiupeng(College of Mechanical Engineering, Chongqing University, Chongqing 400044, China Siehuan Petroleum Perforating Materials Co., Ltd, Neijiang 642177, China China National R＆D Center for Tungsten Technology, Xiamen Tungsten Co., Ltd, Xiamen 361026, China)
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2017年第4期91-96,共6页
Materials Science and Technology
关键词
W-Cu药型罩
超细复合粉末
注射成型
组织和性能
混凝土侵彻
W-Cu shaped charge liner
ultrafine composite powder
metal injection moulding
microstructures and properties
concrete penetration
