快速加热过程中Fe-40Ni-Ti合金的晶粒长大行为

发布时间：2018-07-31 20:45

【摘要】：利用热模拟技术、金相观察及定量统计,通过分析Fe-40Ni-Ti合金快速升温过程中试样不同部位的晶粒长大规律,模拟研究了焊接过程中奥氏体晶粒的长大行为。结果表明:温度最高的中心线附近晶粒长大显著,5s内温度达到1350℃时,其尺寸达到了180μm;而距离中心线4mm处的热影响区及母材(试样端部)晶粒变化不大,在80μm左右。金相观察发现TiN颗粒对晶界迁移产生了明显的阻碍作用。
[Abstract]:By means of thermal simulation, metallographic observation and quantitative statistics, the austenite grain growth behavior in welding process was simulated by analyzing the grain growth in different parts of Fe-40Ni-Ti alloy during rapid heating. The results show that the grain size reaches 180 渭 m when the temperature reaches 1350 鈩，

本文编号：2156780