{"id":4294,"date":"2020-11-14T09:35:49","date_gmt":"2020-11-14T09:35:49","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=4294"},"modified":"2020-11-16T01:04:01","modified_gmt":"2020-11-16T01:04:01","slug":"impurities-in-7000-series","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/impurities-in-7000-series\/","title":{"rendered":"Pengotor pada Seri 7000"},"content":{"rendered":"<p>Pengotor utama dalam paduan Al-Zn-Mg dan Al-Zn-Mg-Cu seri 7000 adalah Fe dan Si. Fe akan menurunkan ketahanan korosi dan sifat mekanis paduan, terutama pada paduan dengan kandungan Mn yang lebih tinggi. Oleh karena itu, kandungan Fe harus dijaga serendah mungkin dan dibatasi hingga kurang dari 0,3%. Si dapat menurunkan kekuatan paduan, sedikit mengurangi kinerja lentur, serta meningkatkan kecenderungan terjadinya retak las. Kandungan Si harus dibatasi hingga kurang dari 0,3%.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4318\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/11\/Impurities-in-7000-Series.jpg\" alt=\"Pengotor pada Seri 7000\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/11\/Impurities-in-7000-Series.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/11\/Impurities-in-7000-Series-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Pengotor-pengotor dalam Seri 7000 ini terutama terdapat dalam bentuk FeAl\u2083 yang keras dan rapuh serta Si bebas. Pengotor ini juga membentuk (FeMn)Al\u2086, (FeMn)Si\u2082Al\u2083, Al(FeMnCr), dan senyawa kasar lainnya dengan Mn dan Cr. FeAl\u2083 memiliki efek menghaluskan butiran, tetapi memiliki dampak yang lebih besar terhadap ketahanan korosi. Seiring meningkatnya kandungan fase tak larut, fraksi volume fase tak larut juga meningkat. Fase kedua yang tak larut ini akan pecah dan memanjang selama deformasi, sehingga muncul struktur seperti pita. Partikel-partikel tersebut tersusun dalam garis lurus sepanjang arah deformasi. Komposisi batang yang terpisah. Karena partikel pengotor tersebar di dalam butiran atau pada batas butiran, selama deformasi plastis, pori-pori muncul pada sebagian batas butiran-matriks, yang mengakibatkan retakan mikro, yang menjadi titik awal retakan makroskopis, dan hal ini juga mempercepat perkembangan retakan secara prematur.<\/p>\n<p>Selain itu, hal ini memiliki dampak yang lebih besar terhadap laju pertumbuhan retakan kelelahan. Hal ini memiliki efek tertentu dalam mengurangi plastisitas lokal selama kegagalan. Hal ini mungkin disebabkan oleh peningkatan jumlah pengotor dan berkurangnya jarak antar partikel, sehingga mengurangi kelancaran deformasi plastis di sekitar ujung retakan. Karena fasa yang mengandung Fe dan Si sulit larut pada suhu kamar, fasa-fasa tersebut berperan sebagai lekukan dan cenderung menjadi sumber retakan yang menyebabkan material patah, yang berdampak sangat merugikan terhadap perpanjangan, terutama ketangguhan patah paduan tersebut. Oleh karena itu, dalam perancangan dan produksi paduan baru, kandungan Fe dan Si dikendalikan secara ketat. Selain penggunaan bahan baku logam dengan kemurnian tinggi, beberapa langkah juga telah diambil selama proses peleburan dan pengecoran untuk menghindari pencampuran kedua unsur tersebut ke dalam paduan.<\/p>\n<p>Penawaran AdTech <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/aluminum-flux-refining\/\">fluks aluminium<\/a> Dalam hal penghilangan kotoran, metode ini memiliki keunggulan dalam mengurangi asap serta meminimalkan pemborosan bahan bakar, sehingga memberikan manfaat ekonomi bagi pelestarian lingkungan.<\/p>","protected":false},"excerpt":{"rendered":"<p>The main impurities in 7000 series Al-Zn-Mg and Al-Zn-Mg-Cu alloys are Fe and Si. Fe will reduce the corrosion resistance and mechanical properties of the alloy, especially for alloys with higher Mn content. Therefore, the Fe content should be as low as possible and its content should be limited to less than 0.3%. Si can [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4318,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-4294","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Impurities in 7000 Series | Aluminum Flux Refining<\/title>\n<meta name=\"description\" content=\"The main impurities in 7000 series Al-Zn-Mg and Al-Zn-Mg-Cu alloys are Fe and Si. 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