超高速撞击下47Zr45Ti5Al3V合金的宏观与微观响应行为

发布时间：2018-04-27 09:20

本文选题：空间碎片 + ZrTiAlV　；参考：《高压物理学报》2017年03期

【摘要】：为了研究新型锆钛合金47Zr45Ti5Al3V在空间微小碎片环境中的适用性,采用激光驱动微小飞片超高速撞击方式,开展了微小飞片单次和累积多次超高速撞击实验。采用表面轮廓仪测量了撞击坑深度,由此获得了在撞击速度范围内撞击坑深度与飞片速度、累积撞击次数的关系。通过扫描电镜和透射电镜研究了撞击坑周围的微观组织结构和形貌,发现在撞击坑周围没有形成微空洞、微裂纹、绝热剪切带等缺陷,也没有观测到明显的细化晶粒。此外,X射线衍射谱显示撞击坑周围仍然保持α和β两相结构,但是α→β相变使β相的含量增加。可以认为,新型合金47Zr45Ti5Al3V在超高速撞击后仍具有稳定的组织结构和机械性能,在空间微小碎片环境中具有较好的应用前景。
[Abstract]:In order to study the applicability of new type zirconium titanium alloy (47Zr45Ti5Al3V) in space microdebris environment, a single and cumulative multiple hypervelocity impact experiments were carried out with laser driven micro flyer. The depth of impact crater is measured by surface profilometer, and the relationship between depth of impact crater and velocity of flyer and cumulative number of impact is obtained in the range of impact velocity. The microstructure and morphology of the crater were studied by SEM and TEM. It was found that there were no microvoids, microcracks and adiabatic shear bands around the crater, and no obvious grain refinement was observed. In addition, X-ray diffraction spectra show that there are still 伪 and 尾 phases around the crater, but the 尾 phase transition increases the content of 尾 phase. It can be concluded that the new alloy 47Zr45Ti5Al3V still has stable microstructure and mechanical properties after hypervelocity impact and has a good application prospect in space microdebris environment.
【作者单位】：北京卫星环境工程研究所;
【基金】：国家自然科学基金青年科学基金(11505299) 技术基础科研项目(JSHS2015203B002)
【分类号】：TG146

【相似文献】