摘要
通过金相组织观察、图片分析软件统计平均值、多项式回归方法,在实验室条件下用半定量法研究了不同温度下取向纯铁奥氏体比例的演变规律,在850~900℃奥氏体、比例呈现峰值,在1 050~1 100℃为完全奥氏体化温度,奥氏体比例呈现"双峰值"规律。为了确保在冷却过程中奥氏体比例比较稳定,认为取向纯铁常化工艺的理想温度区间应为850~900℃。
By means of metallographic structure observation,counting average value with picture analysis software,polynomial regression method,the evolution lawof austenite proportion in orientation pure iron under different temperatures is researched in lab.with semi-quantitative method,that is,under 850 to 900℃,the proportion presenting as peak value,and under 1 050 to 1 100 ℃,the full austenite transforming temperature,the proportion as ＂ double peak value＂.It is considered the ideal temperature range for normalizing process of orientation pure iron should be 850 to 900 ℃ to ensure the austenite proportion being steady in cooling.
出处
《河北冶金》
2017年第2期25-30,共6页
Hebei Metallurgy
关键词
等温处理温度
取向纯铁
奥氏体比例
影响
isothermal treatment temperature
orientation pure iron
austenite proportion
influence
