摘要
用电子探针和透射电镜对厚规格Ti、Nb微合金化Q345B钢板中夹杂物和析出物进行了观察分析,结果表明,Q345B钢板中的夹杂物主要是锰、钙的氧化物和硫化物以及它们的复合夹杂物,氧化物大多呈球状或椭球状,硫化物多数呈长条状;析出物主要是铌和钛及其化合物,钛主要以TiN的形式存在,呈方形或矩形;铌主要以尺寸较大的碳氮化物存在,以椭圆形为主,析出在奥氏体晶内、晶界上。
The inclusion and precipitate of Ti and Nb microalloy Q345B heavy plate are observed and analyzed by electron probe and transmission electron microscope （TEM）. The results show that the inclusions are mainly the oxide of manganese and calcium, sulfide and their complex inclusion; the oxides are mostly spherical or inclusions and the sulfide is strip inclusion; the precipitates are mainly niobium, titanium and their compound; the titanium exist with the form of square or rectangle TiN; the niobium exist by larger size and ellipsoidal carbon-nltride, separating out in the austenite and the grain boundary.
出处
《山东冶金》
CAS
2007年第1期43-45,共3页
Shandong Metallurgy
