在FeMnAlC钢中用方铅矿（Al2O3MnO）和氧化锰（MnO2）形核针状铁素体
Nucleating Acicular Ferrite with Galaxite (Al2O3MnO) and Manganese Oxide (MnO2) in FeMnAlC steels
摘要：
在Fe-13.92Mn-4.53Al-1.28Si-0.11C钢中，研究了方铅矿（Al 2 O3 MnO）和氧化锰（MnO 2）对针状铁素体形核的有效性。热轧和淬火钢具有δ铁素体和部分转变奥氏体的双重显微组织。热处理被用来操纵的浓度和类型的氧化物和铁素体板密度被发现与低失配夹杂物。观察到贝氏体和针状铁素体两者，并且原始奥氏体具有16.5微米的晶粒直径。在拉伸测试时，残余奥氏体转变为α-马氏体。抗拉强度和伸长率分别为970 MPa和40%。屈服强度被发现是依赖于铁素体板的大小，这与奥氏体的强度呈线性变化。塑性下降的δ-铁素体和变形诱导的α-马氏体之间的强度差距增加。
英文摘要：
Effectiveness of galaxite (Al2O3MnO) and manganese oxide (MnO2) in nucleating acicular ferrite was demonstrated in a steel with composition of Fe-13.92Mn-4.53Al-1.28Si-0.11C. The hot rolled and quenched steel had a duplex microstructure of delta-ferrite and partially transformed austenite. Thermal treatments were used to manipulate the concentration and type of oxides and the ferrite plate density was found to correlate with inclusions of low misfit. Both bainitic and acicular ferrite were observed and the prior austenite had a grain diameter of 16.5 micrometers. Upon tensile testing the retained austenite transformed to alpha-martensite. Ultimate tensile strength and elongation were 970 MPa and 40 percent. The yield strength was found to be dependent on the ferrite plate size, which varied linearly with the strength of the austenite. Ductility decreased as the strength disparity between delta-ferrite and deformation-induced alpha-martensite increased.
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