Abstract：The display of the prior austenite grain boundary usually adopts grain boundary corrosion method. However, the success rate of this method is not high with certain limitation. Moreover, the picric acid solution used belongs to dangerous goods. In order to better display the prior austenite grain boundary, the display technology for the prior austenite grain boundary in low-carbon steel was systemically investigated based on electron backscatter diffraction (EBSD). The experimental results showed that the prior austenite grain boundary could be displayed by EBSD technology compared to the conventional boundary corrosion method. The optimal grain boundary disorientation was in range of 20°-50°. Moreover, the average grain size of prior austenite in this low-carbon steel was 40.02μm, which was basically consistent with the statistical results by boundary corrosion method. However, the experimental method was not applicable for the prior austenite grain boundary after large deformation, which was possibly due to the change of disorientations among the deformed martensite variant after deformation.
崔桂彬, 鞠新华, 尹立新, 孟杨, 温娟. 基于电子背散射衍射技术的低碳钢原奥氏体晶界的显示技术探讨[J]. 冶金分析, 2019, 39(7): 1-7.
CUI Gui-bin, JU Xin-hua, YIN Li-xin, MENG Yang, WEN Juan. Discussion of display technology for the prior austenite grain boundary in low-carbon steel based on electron backscatter diffraction. , 2019, 39(7): 1-7.
梁宇,向嵩.梁益龙.等.原奥氏体晶粒尺寸对珠光体钢组织及韧性的影响[J].材料导报,2017,31(1):77-81.LIANG Yu,XIANG Song,LIANG Yi-long,et al.Effect of prior austenite grain size on microstructure and toughness of pearlitic steel[J].Materials Review,2017,31(1):77-81.
[2]
赵西成,霍群英.热轧工艺对20MnMoB钢奥氏体晶粒度的影响[J].金属热处理,2001,26(12):34-36.ZHAO Xi-cheng,HUO Qun-ying.Influence of hot rolling technology on austenite grain size of 20MnMoB steel[J].Heat Treatment of Metals,2001,26(12):34-36.
[3]
于庆波,张仲波,李子林,等.Nb对低碳钢奥氏体晶粒长大的影响[J].钢铁,2006,41(12):70-74.YU Qing-bo,ZHANG Zhong-bo,LI Zi-lin,et al.Effect of Nb on austenite grain growth of low carbon steel[J].Iron and Steel,2006,41(12):70-74.
[4]
杨跃辉.高铌低碳贝氏体钢奥氏体晶粒的长大行为[J].机械工程材料,2016,40(6):106-110.YANG Yue-hui.Austenite grain growth behavior of low carbon bainite steel with high Nb content[J].Materials for Mechanical Engineering,2016,40(6):106-110.
[5]
何健楠,刘金源,梅娜,等.奥氏体晶粒氧化显示浸蚀方法的改进[J].江西冶金,2015,35(3):5-7.HE Jian-nan,LIU Jin-yuan,MEI Na,et al.Improving etching method to show austenite grain oxidation[J].Jiangxi Metallurgy,2015,35(3):5-7.
[6]
向嵩,孙玉领,梁益龙,等.SWRS82B盘条钢原奥氏体晶界显示技术[J].热加工工艺,2011,40(14):29-31.XIANG Song,SUN Yu-ling,LIANG Yi-long,et al.Revealing techniques of austenite grain boundary in SWRS82B wire rod steel[J].Hot Working Technology,2011,40(14):29-31.
[7]
王维发,王星,王培科,等.ZG25MnF8钢调质组织原奥氏体晶粒的显示方法[J].理化检验:物理分册,2016,52(1):25-35.WANG Wei-fa,WANG Xing,WANG Pei-ke,et al.A method to display the original austenite grain of conditioning structure of ZG25MnF8 steel[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2016,52(1):25-35.
[8]
张美汉,许为宗,郭正洪,等.EBSD在马氏体变体间位向关系测定中的应用[J].电子显微学报,2010,29(1):63-68.ZHANG Mei-han,XU Wei-zong,GUO Zheng-hong,et al.Study on the orientational relationship between martensite variants by EBSD[J].Journal of Chinese Electron Microscopy Society,2010,29(1):63-68.
[9]
王申存,李志成,易丹青,等.低温回火马氏体取向关系的电子背散射衍射研究[J].中南大学学报,2011,42(9):2620-2627.WANG Shen-cun,LI Zhi-cheng,YI Dan-qing,et al.Orientation relationship of low temperature tempered martensite investigated by electron back scattered diffraction[J].Journal of Central South University,2011,42(9):2620-2627.
[10]
秦兆慧,胡建民,王月媛,等.立方晶系中同指数晶列与晶面的空间取向关系[J].大学物理,2017,36(9):24-26.QIN Zhao-hui,HU Jian-min,WANG Yue-yuan,et al.The relationship of the spatial orientation between the crystal columns and the crystal surface of the same exponential in cubic crystal[J].University Physics,2017,36(9):24-26.
[11]
王瑞军,赵素英,张礼刚,等.马氏体相变的取向关系及变体[J].河北师范大学学报:自然科学版,2009,33(4):482-490.WANG Rui-jun,ZHAO Su-ying,ZHANG Li-gang,et al.Study on the orientation relationships and the variants of the martensite[J].Journal of Hebei Normal University:Natural Science Edition,2009,33(4):482-490.
