本文選題：空間碎片 + ZrTiAlV�。� 參考：《高壓物理學報》2017年03期

【摘要】：為了研究新型鋯鈦合金47Zr45Ti5Al3V在空間微小碎片環(huán)境中的適用性,采用激光驅(qū)動微小飛片超高速撞擊方式,開展了微小飛片單次和累積多次超高速撞擊實驗。采用表面輪廓儀測量了撞擊坑深度,由此獲得了在撞擊速度范圍內(nèi)撞擊坑深度與飛片速度、累積撞擊次數(shù)的關系。通過掃描電鏡和透射電鏡研究了撞擊坑周圍的微觀組織結(jié)構(gòu)和形貌,發(fā)現(xiàn)在撞擊坑周圍沒有形成微空洞、微裂紋、絕熱剪切帶等缺陷,也沒有觀測到明顯的細化晶粒。此外,X射線衍射譜顯示撞擊坑周圍仍然保持α和β兩相結(jié)構(gòu),但是α→β相變使β相的含量增加�？梢哉J為,新型合金47Zr45Ti5Al3V在超高速撞擊后仍具有穩(wěn)定的組織結(jié)構(gòu)和機械性能,在空間微小碎片環(huán)境中具有較好的應用前景。
[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 偽 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.
【作者單位】： 北京衛(wèi)星環(huán)境工程研究所;
【基金】：國家自然科學基金青年科學基金(11505299) 技術基礎科研項目(JSHS2015203B002)
【分類號】：TG146

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相關博士學位論文 前1條

1 張品亮;47Zr45Ti5Al3V合金的超高速撞擊特性研究[D];西南交通大學;2013年

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本文編號：1810150