The Effect of Precipitate Evolution on Austenite Grain Growth in RAFM Steel.
The Effect of Precipitate Evolution on Austenite Grain Growth in RAFM Steel.
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DOI：
10.3390/ma10091017
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发表时间：
2017-09-01
期刊：
影响因子：
--
通讯作者：
Yu J
中科院分区：
文献类型：
--
作者：
Yan B;Liu Y;Wang Z;Liu C;Si Y;Li H;Yu J
为研究低活化铁素体/马氏体(RAFM)钢中不同类型的析出物及析出物的析出行为对奥氏体相的影响，将RAFM钢加热到不同的奥氏体化温度。用光学显微镜(OM)和透射电子显微镜(TEM)观察了试件的显微组织。结果表明，随着奥氏体化温度的升高，M23C6和MX析出物逐渐粗化并溶解到基体中。M23C6析出物在1100℃时完全溶解，而MX析出物在1200℃时完全溶解。两种析出物的演化对奥氏体相的尺寸有显著影响。基于Zener钉扎模型，定量分析了析出相演化对奥氏体晶粒度的影响。结果表明，M23C6和MX析出物的粗化和溶解降低了晶界钉扎压力，促进了奥氏体晶的快速长大。析出物的粗化和溶解对奥氏体相含量也有影响。
To study the effects of various types of precipitates and precipitate evolution behavior on austenite (size and phase fraction) in reduced activation ferritic/martensitic (RAFM) steel, RAFM steel was heated to various austenitizing temperatures. The microstructures of specimens were observed using optical microscopy (OM) and transmission electron microscopy (TEM). The results indicate that the M23C6 and MX precipitates gradually coarsen and dissolve into the matrix as the austenitizing temperatures increase. The M23C6 precipitates dissolve completely at 1100 °C, while the MX precipitates dissolve completely at 1200 °C. The evolution of two types of precipitate has a significant effect on the size of austenite. Based on the Zener pinning model, the effect of precipitate evolution on austenite grain size is quantified. It was found that the coarsening and dissolution of M23C6 and MX precipitates leads to a decrease in pinning pressure on grain boundaries, facilitating the rapid growth of austenite grains. The austenite phase fraction is also affected by the coarsening and dissolution of precipitates.
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钽对 RAFM 钢奥氏体转变动力学的影响
DOI：
10.1016/s1006-706x(17)30106-1
发表时间：
2017-07-01
影响因子：
2.5
作者：
Chen, Jian-guo;Liu, Yong-chang;Li, Hui-jun
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影响因子：
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