简介:Fe-0.2C-l.5Si-l.67Mn钢受到熄灭并且划分(Q&P)进程,和在在提高的划分温度的马氏体和奥氏体之间的接口移植被观察。接口迁居在constrainedparaequilibrium(用户终端设备)被排除模型。基于“端点”由用户终端设备模型预言接口移植的热力学的条件被分析,也就是说,在在铁酸盐(martenisite)和奥氏体的铁的化学势的差别生产铁原子的驱动力从一个阶段移居到另外的阶段。另外,接口迁居罐头改变奥氏体部分;作为结果,在划分温度的奥氏体部分可能在通过接口移植熄灭温度比那高,但是这现象不能被用户终端设备模型解释。
简介:Themicrostructureofthelasermelted1.0%Ctoolsteelhavebeeninvestigated.Theregionaffectedbythelasercanbesubdividedinto3zones,whichconsistofameltedregionatthesurface,azonewithsolidstatetransformationandtheareaadjacenttotheunaffectedsubstratewherecementiteisslightlydissolved.Themeltedzonepossessedacellulargrowthmorphologyconsistingofausteniteandmartensite.Thecarboncontentoftheaustenitewasmeasuredtobeover1wt-%.Agreatdealofretainedausteniteandtwinnedmartensitewerefoundinthefirsttwozones(themeltedandsolidtransformed).
简介:继R1900T/TB、R1900TⅡ、R1900TⅢ后,爱德发公司推出这款漫步者R1900TⅡ06版多媒体音箱.继续扮演中端立体声有源音箱的黑马王子。
简介:TheRamanspectraof3%(molefraction)Y2O3-ZrO2(3Y)areobtainedatdifferenttemperaturefrom77Kto853K.Theresultsshowthat260cm-1Egand460cm-1Egmodesonthespectrashifttowardlowerwavenumberwiththeincreaseoftemperature;meanwhile,thecontinuityoftheHalfWidthatHalfMaximum(HWHM)andwavenumber(frequency)ofRamanbandsarebrokenandt-phaseonlypartiallytransformstom-phaseat523K.Basedontheexperimentalresults,thispaperdiscussesthet-phaselatticevibrationof3YandpresentstheimagesofvibrationdisplacementofsixRaman-activemodesfort-phaseofZrO2.TheanalysisindicatesthattherearediversitiesexistinginthedisplacementoftheatomicvibrationofRaman-activemodesbecauseoftheirdifferentsymmetriesatvarioustemperature,whichleadstothedifferentchangetendenciesofRamanbands.Furthermore,theabruptchangesofsomeRaman-activemodesindicatingtheatomicdisplacementareassumedtobethecondensationsofphononmodesinthet→mphasetransition.