X射线衍射法测定渗碳钢中残余奥氏体

用X射线衍射法测量低碳合金渗碳钢的渗碳层残余奥氏体含量，测量速度较快，结果精确，重现性好，优于传统的金相法测量。     

X射线衍射和能谱联用技术用于锌冶炼废渣的物相分析

为了确定锌冶炼废渣的物相组分,以X射线衍射(XRD)分析和能谱(EDS)为基础方法,对锌冶炼废渣进行了物相分析。结果表明,将与扫描电镜关联的EDS和XRD联合使用,通过对多相混合的冶炼废渣XRD粉末衍射图谱和物相标准谱线进行物相对照分析,结合扫描电镜微区衍射能谱图的元素含量测定,能够准确确定锌冶炼废渣的物相组成,为冶炼废渣的综合利用提供依据。在实验条件下,测得锌冶炼氧粉酸浸渣样品的主要元素为Pb、S、O和Zn,主要物相为PbSO₄和ZnS;铜镉渣的主要元素有O、Zn、Al和Cd,主要物相是ZnS、ZnSO₄·6H₂O,而Cd元素以CdS、CdSO₄、CdO和单质Cd的形式存在于铜镉渣中;布袋氧粉的主要元素是Zn、O、Pb和S,主要物相为ZnO和ZnS。     

X射线衍射法测定高炉风口平面径向温度分布

利用Ｘ射线衍射法，测定经过不同高温热处理的入炉焦炭中碳（００２）晶面Ｘ射线衍射峰半高宽，作出Ｂ－Ｔ温度温度标定曲，并根据此曲线，推断出宝钢大型高炉风口平面径向焦炭温度的分布情况。     

X射线衍射定量分析参照标样法

本文提出对于多物相分析体系，当其满足定量分析条件时，应在系列标样中选取一个准确度最高的标样作为参照标样，便可建立被测物相的表征浓度与其衍射强度的线性关系式。可平抑分析数据的统计误差。     

无间隙原子钢冷轧板织构的快速检测

介绍了基于X射线二维探测器织构的快速检测原理.以无间隙原子钢冷轧板织构的检测为例,用常规织构的检测结果作为参照标准,分析了各种X射线二维衍射条件对计算取向分布函数的影响.实验表明,用二维探测器可以同时采集多个极图的数据,合理减少样品转动,织构的检测仅需几分钟时间,且织构的检测结果与用传统X射线衍射法的一致.     

极图数据与板材织构信息

以板材织构在线检测为应用背景,以铝板和超深冲钢板为例借助X射线测量了8组不同的极图数据,采用不同的方法计算取向分布函数,用以分析极图数据和板材织构信息的关系。研究表明,增加极图数目有利于缩小极图测量范围,同时极图测量范围缩小的方式也应与板材织构类型相关。     

电场对08Al深冲钢板退火织构的影响

利用三维取向分析术(ODF)研究了电场对冷轧08Al深冲钢板退火过程中升温阶段和保温阶段退火织构的影响.结果表明,在退火的升温过程中,电场降低了α纤维织构的强度,提高了γ纤维织构的强度.在退火的保温过程中,当保温时间较短时,电场有利于降低再结晶α纤维织构的强度和提高再结晶γ纤维织构的强度;当保温时间较长时,电场对再结晶织构的影响不明显.电场促进α纤维织构向再结晶γ纤维织构转变以及γ纤维织构中的{111}<112>取向向{111}<110>取向的转变.     

焦炭光学组织的测定与分析

在分析了煤变质程度、煤岩相组成等对焦炭光学组织的影响，以及焦炭光学组织与焦炭性质之间的关系的基础上，指出以粒状镶嵌组织为主的焦炭更符合高炉的要求。     

冷轧钢板变形织构的定量分析

本文利用取向分布函数(ODF),取向线分析和纤维织构定量分析研究了工业纯铁和超深冲钢板冷轧织构的变化过程;讨论了α取向线和γ取向线以及一些取向的稳定性。同时也分析了钢板变形过程及杂质原子对织构形成的影响。     

冷轧钢板变形织构的理论模拟

采用取向分布函数法研究了钢板中的轧制织构。其中以{110}<111>滑移系滑移为基本变形机制,利用Sachs、Taylor、RC和PC等模型对轧制织构进行了理论模拟。这些理论模型可以再现体心立方金属冷轧过程中晶粒取向在{112}<110>,{111}<110>,{111}<112>及{001}<110>附近的聚集过程。分析表明{110}<111>滑移系的滑移是体心立方金属十分重要的变形机制,适当参考各种变形模型可以更为准确地描述冷轧织构的形成过程。还根据冷轧织构的变化过程分析讨论了钢板应力和应变张量连续性等问题。     

Heterogeneous Phase Transformation Texture Evolution in Low Alloyed ULC Steel Sheets

In the present study the cold rolled sheet of ultra low carbon steel alloyed with manganese and aluminium has been investigated after α ? γ ? α transformation annealing in vacuum. The texture analysis was carried out on the surface, sub‐surface and in the bulk of the annealed sheet. A <100> // ND and <110>//ND texture with weak intensity is observed on the sheet surface and a strong <111>//ND fibre in the bulk of the transformed sheet. In depth micro‐texture analysis by orientation contrast microscopy reveals that two different types of orientation selection mechanisms could be active. The texture at the metal‐vapour interface is controlled by surface energy anisotropy (producing a local <100>, <110>//ND texture at the surface) and a texture memory mechanism generating strong <111>//ND fibre is active in the bulk of the sheets.     

Recrystallization Texture and Microstructure of Metal Substrate for Y123 Coated Superconductor

Thesecondgenerationofhigh temperaturesuper conductingtapesusingYBCO 12 3superconductorhavebeenanattractivesubjectinrecentyears .IncomparisonwithBibasedsuperconductors ,YBCOshowsbetterirreversibility ,lowAClosscapabilityandhighcriticalcurrentdensityJC inhighmagneticfields[1] .However ,owingtoitspropertyofphysicalmetallurgy ,YBCOtapescannotbeproducedbyOPIT(OxidePowderinTube)technique ,whichhasbeenusedinBibasedsuperconductorsuccessfully[2 ] .Fur thermore ,poorintergrainbondinginpolycrys…     

Al-Li合金板《111》织构的形成及晶体空间取向分布特征

用ODF方法研究了Al Li合金形变热处理的织构、织构特征及其变化规律。实验在这种fcc结构的Al Li合金板中发现了{111}//ND纤维织构,最大f(g)大于3。同时,对其形成机制进行了分析讨论。     

The Formation of the {112}<111> Shear Texture in Hot-Rolled Sheets of Electrical Steels

Due to the friction between rolls and sheet surface, shear texture inevitably occurs in the surface layer of the hot-rolled sheets in electrical steel. The shear texture contains Goss texture {110}<001>, brass texture {110}<112>, and copper texture {112}<111>. The existence of shear texture and its corresponding microstructure affect the texture distribution in the subsequent normalized sheets, cold-rolled sheets, and final sheets. Electron backscattered diffraction and reaction stress model are used herein to study the formation conditions of {112}<111> orientation in the hot-rolled sheets. The results show that initial rotated cube orientation tends to rotate around transverse direction to the copper orientation during hot rolling due to the shear action. Different shear orientations can be formed in different regions of an initial coarse columnar grain during hot rolling, because of the change in surrounding environment reaction and the difference of the shear strain at different thickness positions. The thinner the hot-rolled sheet is, the smaller the dynamic recrystallization region with shear orientation, and there is almost no copper texture in the thinnest hot-rolled sheet. The simulation results show that the copper texture is easy to form under the action of σ₂₃ and σ₂₂ reaction stresses.