en Research Paper Research Paper <span style="font-size:10.5pt"><span style="line-height:200%"><span style="text-autospace:none"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">The&nbsp;</span></span></span></span></span></span></span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">present study focuses on the phase and structural features of MnAl intermetallic compound during solid-state synthesis. </span></span></span><span style="font-size:10.5pt"><span style="line-height:200%"><span style="text-autospace:none"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">In this regard, the milling process was done in different</span></span></span></span></span></span></span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">Mn_50+xAl_50-x (0</span></span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><</span></span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">x</span></span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><</span></span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">7.5)</span></span></span><span style="font-size:10.5pt"><span style="line-height:200%"><span style="text-autospace:none"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">powder mixtures and the prepared samples were evaluated using X-ray diffractometer, scanning and transmission electron microscopy, differential thermal analysis and vibrating sample magnetometer. The results showed that the &tau;-MnAl magnetic phase with L1₀ structure could not be formed during the milling and low temperature annealing. During milling process, Al atoms dissolve in Mn network and a single </span></span></span><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">&beta;</span></span></span><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">-Mn supersaturated solid solution (SSSS) form. The </span></span></span><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">&beta;</span></span></span><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">-Mn (SSSS) phase is unstable and transforms into the icosahedral quasi-crystal as well as </span></span></span><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">&gamma;_2-</span></span></span><span style="font-size:12.0pt"><span style="line-height:200%"><span new="" roman="" style="font-family:" times="">Al₈Mn₅ and &beta;-Mn stable phases during subsequent annealing. </span></span></span></span></span></span></span></span><br> &nbsp; MnAl permanent magnet,Mechanical alloying,Icosahedral phase. 74 81 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1216-7&slc_lang=en&sid=1 Majid Tavoosi ma.tavoosi@gmail.com 1800319475328460019268 1800319475328460019268 Yes Department of Materials Engineering, Malek-Ashtar University of Technology, Iran