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NON-EQUILIBRIUM SEGREGATION STRUCTURE OF P IN COLD ROLLED Fe-P ALLOYS AND ITS RELATION WITH TEXTURE VARIATION
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作者 ZHANG Lixin NING Hua Laboratory of Corrosion Science,Institute of Corrosion and Protection of Metals,Academia Sinica.Shenyang,ChinaZHOU Jing LI Liguang Institute of Metal Research,Academia Sinica,Shenyang,China Professor,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1992年第6期425-431,共7页
The relations between the non-equilibrium segregation process of P and the change of the texture in Fe-P alloys have been studied by analytical electron microscope and orientation distribution function.It was shown th... The relations between the non-equilibrium segregation process of P and the change of the texture in Fe-P alloys have been studied by analytical electron microscope and orientation distribution function.It was shown that P segregated preferentialy on the{110}slip planes, the P segregation structures with repeating cycle a=1.582 nm form at 450℃.<001>// ND direction abated.<111>//ND direction heightened.And{111}<110>has a tendancy to transform into{111}<143>texture in recovering process.{111}<143>direction trans- forms into{111}<112>direction after recrystalizing.A model to describe the effects of non-equilibrium segregation structures of P on orientation change was proposed and em- ployed to interpret the experiment results. 展开更多
关键词 Fe-P Alloy lattice image recovering process non-equalibrium segregation structure
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dimer-dimer模型在不均匀催化表面上的动力学相变
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作者 贾秀杰 杨展如 《北京师范大学学报(自然科学版)》 CAS CSCD 北大核心 2004年第2期201-207,共7页
研究了具有中间产物的dimer dimer(DD)模型的非平衡相变行为 .分别讨论了只有一种反应物脱附时在无惰性点 (inert site)表面上的动力学相变行为 ,在有惰性点的表面上无反应物脱附的相变行为 ,以及二者综合考虑时催化表面的动力学相变行... 研究了具有中间产物的dimer dimer(DD)模型的非平衡相变行为 .分别讨论了只有一种反应物脱附时在无惰性点 (inert site)表面上的动力学相变行为 ,在有惰性点的表面上无反应物脱附的相变行为 ,以及二者综合考虑时催化表面的动力学相变行为 .通过这些讨论得出 :脱附使得更多的格点变空 ,有利于反应的进一步进行 ;脱附率越大 ,上述现象越明显 ,反应窗口也就越宽 ;而晶格表面的缺陷点的存在 ,阻碍了反应粒子的吸附 ,不利于反应的进行 ,具体表现就是使反应窗口变窄 ,最终生成物浓度变小 .这种惰性格点所占比例越大 ,上述现象越突出 ,直至浓度达到一定值时 ,非惰性格点难以形成大的渗流集团 。 展开更多
关键词 脱附率 惰性点 非平衡动力学相变
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