Ferrit (besi): Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Updated phase diagram |
Rescuing 2 sources and tagging 0 as dead.) #IABot (v2.0.9.5 |
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(2 revisi perantara oleh 2 pengguna tidak ditampilkan) | |||
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[[Berkas:Iron carbon phase diagram.svg|jmpl|ka|300px|[[Diagram fasa]] besi-karbon, menunjukkan kondisi di mana '''
'''Ferrit''', atau '''α-ferrit''' ('''α-Fe''') atau '''besi alfa''', adalah istilah [[ilmu material]] untuk [[besi]] murni dengan [[struktur kristal]] ''[[body-centered cubic]]'' ([[B.C.C]]). Struktur kristalin ini memberikan sifat [[magnetik]] baja [[baja]] dan [[besi tuang]], dan merupakan contoh sederhana dari bahan [[Feromagnetisme|ferromagnetik]].<ref>{{Citation | last = Maranian | first = Peter | title = Reducing Brittle and Fatigue Failures in Steel Structures | publisher = American Society of Civil Engineers | location = New York | year = 2009 | url = http://books.google.com/books?id=qTT2LgLnpMUC&pg=PA81 | isbn = 978-0-7844-1067-7 | postscript = . | accessdate = 2015-03-20 | archive-date = 2023-07-20 | archive-url = https://web.archive.org/web/20230720093246/https://books.google.com/books?id=qTT2LgLnpMUC&pg=PA81&hl=en | dead-url = no }}</ref>
Memiliki kekuatan 280 N/mm<sup>2</sup> dan kekerasan kira-kira 80 [[skala Brinell|Brinell]].<ref>{{Citation | title = Structure of plain steel | url = http://www.keytometals.com/page.aspx?ID=CheckArticle&site=kts&NM=3 | accessdate = 2008-10-21 | archive-date = 2015-04-02 | archive-url = https://web.archive.org/web/20150402121357/http://www.keytometals.com/page.aspx?ID=CheckArticle&site=kts&NM=3 | dead-url = no }}.</ref>
Pada besi murni, ferrit stabil di bawah suhu {{convert|910|C|F|abbr=on}}. Di atas suhu ini, struktur [[sistem kristal kubus|face-centred cubic]] dari besi terbentuk, yaitu [[austenit]] (besi-gamma). Di atas {{convert|1390|C|F|abbr=on}}, struktur kristal body-centred cubic kembali terbentuk dengan nama '''delta-ferrit''' ('''δ-Fe''').
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{{reflist}}
* {{Citation | last = Smith | first = William F. | last2 = Hashemi | first2 = Javad | title = Foundations of Materials Science and Engineering | edition = 4th | year = 2006 | publisher = McGraw-Hill | isbn = 0-07-295358-6 | postscript =.}}
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