%0 Journal Article
%T IN SITU OBSERVATION OF NUCLEATION AND GROWTH OF HIGH-TEMPERATURE δ PHASE IN STAINLESS STEEL AISI 304 DURING HEATING<br>IN-SITU OBSERVATION OF NUCLEATION AND GROWTH OF HIGH-TEMPERATURE δ PHASE DURING AUSTENITE → FERRITE+LIQUID PHASE TRANSFORMATION IN AN AISI304 STAINLESS STEEL
%A Gaofei Liang
%A <br>梁高飞
%A 王成全
%A 方园
%J 金属学报
%D 2006
%I 
%X 利用共焦激光扫描显微镜原位观察AISI304不锈钢加热过程中高温占相的形核与生长．结果表明，130m-1400℃之间δ相在，γ晶界处优先析出，而δ相在γ晶粒内“爆炸”形成需在1410℃以上；δ相形成主要受控于Ni原子的扩散；提高升温速率有利于δ晶粒细化，促使δ／γ平界面失稳并出现二次枝晶．δ相析出时以非小平面为主，另可见少量的小平面δ晶体；随着相变进行，小平面状δ相呈现出边缘钝化、向非小平面转变的趋势．利用平直界面稳定临界扰动理论探讨了δ相生长界面失稳的机制，并从结晶动力学对δ相生长方式转变的原因进行了分析．
%K AISI 304 stainless steel
%K confocal laser scanning microscope
%K ferrite
%K austenite
%K in-situ observation<br>不锈钢
%K 共焦激光扫描显微镜
%K 铁素体
%K 原位观察
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=DEF91A386FDCB319&yid=37904DC365DD7266&vid=ECE8E54D6034F642&iid=5D311CA918CA9A03&sid=8C8D39B86A1EED4F&eid=AF407E3178C0B145&journal_id=0412-1961&journal_name=金属学报&referenced_num=9&reference_num=8