Texture Analysis using The Neutron Diffraction Method on The Non Standardized Austenitic Steel Process by Machining,Annealing, and Rolling

• Main Authors: Tri Hardi Priyanto, Parikin Parikin, Meijuan Li
• Format: Article
• Language: English
• Published: Universitas Indonesia 2016-04-01
• Series: Makara Journal of Technology
• Subjects: austenitic stainless steel, neutron diffraction, texture
• Online Access: http://journal.ui.ac.id/technology/journal/article/view/3254

<div><font face="Times New Roman, serif"><span style="font-size: 13.3333px;">Austenitic steel is one type of stainless steel which is widely used in the industry. Many studies on &nbsp;austenitic stainless&nbsp;</span></font><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">steel have been performed to determine the physicalproperties using various types of equipment and methods. In this&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">study, the neutron diffraction method is used to characterize the materials which have been made from &nbsp;minerals extracted&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">from the mines in Indonesia. The materials consist of a granular ferro-scrap, nickel, ferro-chrome, ferro-manganese, and&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">ferro-silicon added with a little titanium. Characterization of the materials was carried out in threeprocesses, namely:&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">machining, annealing, and rolling. Experimental results obtained from the machining process generally produces a texture&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">in the 〈100〉direction. From the machining to annealing process, the texture index decreases from 3.0164 to 2.434.Texture&nbsp;</span></div><div><font face="Times New Roman, serif"><span style="font-size: 13.3333px;">strength in the machining process (BA2N sample) is &nbsp;8.13 mrd and it then decreases to 6.99 in the annealing process&nbsp;</span></font><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">(A2DO sample). In the annealing process the three-component texture appears, cube-on-edge type texture{110}〈001〉,&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">cube-type texture {001}〈100〉, and brass-type {110}〈112〉. The texture is very strong leading to the direction of orientation&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">{100}〈001〉, while the {011}〈100〉is weaker than that of the {001}, and texture withorientation {110}〈112〉is weak. In&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">the annealing process stress release occurred, and this was shown by more randomly pole compared to stress release by&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">the machining process. In the rolling process a brass-type texture{110}〈112〉with a spread towards the goss-type texture&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">{110}〈001〉 appeared, &nbsp;and &nbsp;the &nbsp;brass &nbsp;component &nbsp;is markedly &nbsp;reinforced &nbsp;compared &nbsp;to &nbsp;the undeformed state (before&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">rolling). Moreover, the presence of an additional {110} component was observed at the center of the (110) pole figure.&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">The pole density of three components increases withthe increasing degree of thickness reduction. By increasing degrees&nbsp;</span><span style="font-size: 13.3333px; font-family: 'Times New Roman', serif;">of rolling from 81% to 87%, the value of orientation distribution function increases by a factor aboutthree times.&nbsp;</span></div>