【摘要】：使用場發(fā)射掃描電子顯微鏡(SEM)觀察CGO硅鋼制備過程中第二相粒子的析出行為及分布狀態(tài),統(tǒng)計(jì)粒子的平均尺寸、面密度及Zener因子。結(jié)果表明:試樣中主要存在兩種析出物,一種是(Cu,Mn)S復(fù)合析出物,尺寸為1μm左右,稱為A類析出物,另一種是Cu_2S析出物,尺寸為10~30nm,稱為B類析出物,Cu_2S起主要抑制作用。第二相粒子在熱軋階段大量彌散析出,平均粒子尺寸最小,面密度最高,高溫退火前的加工階段,粒子的平均尺寸不斷增加,面密度逐漸降低;高溫退火過程中,隨著析出物體積分?jǐn)?shù)的降低,其抑制能力呈下降趨勢,960℃時(shí)析出物發(fā)生明顯的聚集現(xiàn)象,當(dāng)Zener因子A低于臨界值0.19nm~(-1)時(shí),二次再結(jié)晶發(fā)生,殘留的粒子不會(huì)產(chǎn)生有效的抑制作用。
[Abstract]:Field emission scanning electron microscopy (SEM) was used to observe the precipitation behavior and distribution of the second phase particles in the preparation of CGO silicon steel. The average size, surface density and Zener factor of the particles were calculated. The results show that there are two kinds of precipitates in the sample, one is (Cu,Mn) S compound precipitates, the size is about 1 渭 m, and the other is Cu_2S precipitates, which are called B precipitates. Cu_2S plays a major inhibitory role. The second phase particles precipitated in large quantities in hot rolling stage, the average particle size was the smallest, the surface density was the highest, and the average particle size increased and the surface density decreased gradually in the processing stage before high temperature annealing. During high temperature annealing, with the decrease of the integral number of precipitates, the inhibition ability of the precipitates decreases, the precipitates gather obviously at 960 鈩，

本文編號(hào)：2318696