光散射学报, 2013, 25 (4): 398, 网络出版: 2014-03-11  

马氏体晶格参量的X射线测量方法研究

Research on Measurement of Crystal Lattice Parameters of Martensite by X-ray
作者单位
北方材料科学与工程研究院宁波所, 宁波 315013
摘要
马氏体具有四方的结构, 其四方性随含碳量的增加而增大, 点阵发生扭曲, 当含碳量比较高时, 原来α-铁晶体的晶面如(110)、(200)、(211)、(220)等的衍射线条分解成为双重线(101-110、002-200、112-211、202-220)。当含碳量降低时, 双重线非常靠近, 形成了一条宽的线带, 使得马氏体晶格参量的测量十分困难。本文利用每对双重线中的多重性因素的变化特点(如101为8,110为4,002为2,200为4,112为8,211为16等)提出了低碳马氏体晶格参量的测量方法。
Abstract
Martensite has a tetragonal structure, the tetragonality can enhance and its lattice become distortable with content of carbon increasing. When the content of carbon is large, diffraction lines of crystal plane (110),(200),(211),(220) at α-Ferrite would turn to doublets(101-110,002-200,112-211,202-220). Whereas the content of carbon is reduced, these doublets are very close with each other and assemble a wide line finally, which lead to measurement on crystal lattice of martensite more difficultly. Using changing feature of multiplicity factor on per doublets(101 is 8, 110 is 4, 022 is 2, 200 is 4, 112 is 8, 211 is 16, etc), a new measuring method on crystal lattice parameters of low-carbon martensite was established in this paper.
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袁书强, 高永亮, 沈正祥, 陈炯, 周春华, 陈巍, 王芳. 马氏体晶格参量的X射线测量方法研究[J]. 光散射学报, 2013, 25(4): 398. YUAN Shu-qiang, GAO Yong-liang, SHEN Zheng-xiang*, CHEN Jiong, ZHOU Chun-hua, CHEN Wei, WANG Fang. Research on Measurement of Crystal Lattice Parameters of Martensite by X-ray[J]. The Journal of Light Scattering, 2013, 25(4): 398.

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