摘要
提出一种用 Ｍｏｎｔｅ Ｃａｒｌｏ模拟单相合金的热影响区（ＨＡＺ）晶粒长大方法，可以将焊接实际时间与模拟过程对应起来．应用有限元方法计算出焊接热循环，并结合晶粒长大的Ａｒｒｈｅｎｉｕｓ公式，模拟了铁素体不锈钢ＥＢ２６－１在一定规范下ＨＡＺ晶粒的演变情况．模拟结果表明，此方法可以预测ＨＡＺ中晶粒的分布以及存在于ＨＡＺ中很陡的温度梯度对晶粒长大的阻碍作用．
A method of Monte Carlo about grain growth in welding heat affected zone of single phase alloy was developed. This model can obtain an one-to-one correlation between Monte Carlo steps and real time of welding. Using FEM the thermal cycles in the HAZ were calculated and according to Arrhenius equation of grain growth, the grain structure evolution in HAZ of ferrite stainless steel EB-26-1 under certain process parameters was simulated. The results show that the grain size distribution in the welding HAZ could be obtained from Monte Carlo simulation, and the grain growth is restricted by the steep temperature gradients in the welding HAZ.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第3期307-310,共4页
Acta Metallurgica Sinica
基金
国家 973超级钢资助项目! G1998061512
