cr23ni13钢的高温氧化动力学及其组织变化研究-材料学专业毕业论文.docx

哈尔滨工程大学硕士学位论文
Abstract
This paper selects the Cr23Nil3 steel oxidized under constant temperature of 900。C、1 100℃、1200。C for a long time to study the time law and the constant of oxidizing speed that this plies with, judge the ability of oxidizing membrane healing by itself and appraise the high temperature resistance of this steel in the high temperature. The hardness of the alloy following the change of time was analyzed by micro—hardness instrument and the alloy’S hardness curve following the change of time was OLYMPUS PME一3 1 1 U microscope also observed the changing shape anization.
The testing results show the Cr23Ni 1 3 steel has good high temperature resistance at temperature of with the rising of oxidizing temperature,the oxidizing speed of the alloy begins to obviously law of alloy oxidized curve has already been close to the straight line law at temperature of 1 200℃.This result proves alloy has already lost anti—oxidant performance in this the alloy appears the 2nd phase in the high temperature,the trend of this steel’S hardness with the time changing
has followed this character under 3 pieces of temperature:the curve has greater wave on the initial stage of oxidizing,but the hardness of the sample and reduces with temperature increasing hardness of the sample increased after 500 experiments indicate that there are obvious anizations inside the the alloy appears the 2nd hardness of the alloy changes with the appearance of result is similar with the result of hardness test.
哈尔滨工程大学硕士学位论文
Key wo rds:the Dynamic Oxidizing;Oxidant Scale
High Temperature resistance;Micro Structure;the Second Phase
哈尔滨工程大学
学位论文原创性声明
本人郑重声明:本论文的所有工作,是在导师的指导下, 由作者本人独立完成的。有关观点、方法、数据和文献等的引用已在文中指出,并与参考文献相对应。除文中已注明引用的内容外,本论文不包含任何其他个人或集体已经公开发表的作品成果。对本文的研究做出重要贡献的个人和集体, 均已在文中以明确方式标明。本人完全意识到本声明的法律结果由本人承担。
作者(签字): 趁
日期:2005年土月27日
哈尔滨工程大学硕士学位论文
第1章绪 论
引言
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