Research progress in quasicrystal - reinforced high performance magnesium alloys 金屬間化合物表面改性技術(shù)研究現(xiàn)狀
Symmetry and matrix representation of octagonal point groups in quasicrystal 準(zhǔn)晶體中八方晶系點(diǎn)群的對(duì)稱性與矩陣表示
The formation and distribution of quasicrystal in as - cast mg - zn - y alloy are investigated 在此基礎(chǔ)上研究合金中準(zhǔn)晶的形成機(jī)理和分布特征。
On this base , the thoughtfulness to prepare quasicrystal reinforced and super - high magnesium alloy is also provided 為后續(xù)研究和制備準(zhǔn)晶增強(qiáng)自生復(fù)合材料和超高強(qiáng)度鎂合金提供思路。
Z . zhang and w . geng , " direct observation of misfit dislocations at the interface between a decagonal quasicrystal and its epitaxial crystalline layers " , phil . mag . lett . , 65 ( 1992 ) 211 - 218 “十面體準(zhǔn)晶與其表面晶體之間界面失配位錯(cuò)的直接觀察” , <哲學(xué)雜志> , (英國(guó))
The study shows that the products of quasicrystal materials mainly consists of a - ( ti , zr ) solid - solution , i - phase , and c14 - laves phase with the mgzn2 structure type 通過(guò)研究我們發(fā)現(xiàn)合成產(chǎn)物主要是由準(zhǔn)晶i -相、 ( ti zr )固熔體相及具有mgzn2晶體結(jié)構(gòu)的laves相所組成。
In this paper , the microstructure of lsrs was systematically studied by using xrd and tem for both the laser ? nduced self - propagating reaction synthesis of ti - zr - ni systems quasicrystal materials and zr - al - ni - cu systems amorphous - based composite materials 對(duì)ti - zr - ni系準(zhǔn)晶材料我們研究了激光點(diǎn)火功率參數(shù)對(duì)同一種組分的組織、孔隙度、顯微硬度的影響。
The microstructure of the as - cast mg - zn - y alloys are analyzed by optical microscope and sem , composition and phases are checked by eds , the constituent phases are identified by xrd and quasicrystal structure is identified by tem 用金相顯微鏡和sem分析低zn和低y含量普通凝固鎂合金組織形貌; sem和eds分析合金和凝固組織中各相的成分; xrd分析凝固組織的相組成; tem確定準(zhǔn)晶的結(jié)構(gòu)。
Noticing that strong exothermic reaction due to large negative enthalpy of mixing can occur among major components of ti - zr - based quasicrystal alloy systems and zr - based bulk amorphous alloy systems , we developed for the first time a new technique for fabricating both ti - zr - ni systems quasicrystal materials and zr - al - ni - cu systems amorphous - based composite materials using laser - induced self - propagating reaction synthesis ( lsrs ) 注意到構(gòu)成ti - zr基準(zhǔn)晶合金體系和zr基大塊非晶合金體系的主要組元之間具有很大的負(fù)混合焓,因而能夠發(fā)生很強(qiáng)的放熱反應(yīng)。利用這一特點(diǎn),我們首次開(kāi)展了激光誘導(dǎo)自蔓延反應(yīng)合成ti - zr - ni系準(zhǔn)晶材料和zr - al - ni - cu系非晶復(fù)合材料的探索研究。
百科解釋
A quasiperiodic crystal, or, in short, quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can continuously fill all available space, but it lacks translational symmetry.