發(fā)布時(shí)間：2018-03-03 11:36

  本文選題：FeCrAl不銹鋼　切入點(diǎn)：Thermo-Calc　出處：《工程科學(xué)學(xué)報(bào)》2017年05期 　論文類型：期刊論文

【摘要】：借助Thermo-calc軟件對(duì)FeCrAl不銹鋼所屬的Fe-(18~21)Cr-(3~5)Al-(0~0.03)C-(0~0.2)Si-(0~0.2)Mn多元體系在凝固過(guò)程中的相變及析出行為進(jìn)行了研究.采用Thermo-calc中TCFE7數(shù)據(jù)庫(kù)對(duì)該體系的垂直截面圖進(jìn)行計(jì)算,分析了不同組元對(duì)凝固和冷卻過(guò)程中相變的影響,并得到FeCrAl不銹鋼的平衡凝固相變路徑圖.結(jié)果表明FeCrAl不銹鋼由1600℃平衡冷卻至300℃的過(guò)程中完整的平衡相變路徑為:L→AlN+αδFe→AlN+αδFe+Cr_7C_3→AlN+αδFe+Cr_7C_3+Cr_(23)C_6→AlN+αδFe+Cr_(23)C_6→AlN+αδFe+Cr_(23)C_6+σ→AlN+αδFe+Cr_(23)C_6+σ+α'→AlN+αδFe+Cr_(23)C_6+α'.凝固過(guò)程中Cr_7C_3與σ相是否析出分別取決于體系中C、Si含量;Al含量的提高可擴(kuò)大αδFe+Cr_7C_3的穩(wěn)定區(qū),降低α'相的析出溫度,抑制σ相的析出;Cr含量的提高可以減小αδFe+Cr_7C_3的穩(wěn)定區(qū),擴(kuò)大σ相和α'相的穩(wěn)定區(qū).
[Abstract]:The phase transformation and precipitation behavior of the Fe-(18~21)Cr-(3~5)Al-(0~0.03)C-(0~0.2)Si-(0~0.2)Mn multicomponent system of FeCrAl stainless steel during solidification were studied by means of Thermo-calc software. The vertical sections of the system were calculated by using the TCFE7 database in Thermo-calc. The effect of different components on the phase transformation during solidification and cooling was analyzed, and the equilibrium solidification path diagram of FeCrAl stainless steel was obtained. The results showed that the complete equilibrium phase transition path of FeCrAl stainless steel from 1600 鈩，

本文編號(hào)：1560882