{"id":1544,"date":"2018-03-21T07:02:45","date_gmt":"2018-03-21T07:02:45","guid":{"rendered":"https:\/\/www.mcctcarbide.com\/acta-materialiafracture-behavior-of-heterogeneous-nanostructured-316l-austenitic-stainless-steel-with-nanotwin-bundles\/"},"modified":"2020-05-04T13:31:41","modified_gmt":"2020-05-04T13:31:41","slug":"acta-materialiafracture-behavior-of-heterogeneous-nanostructured-316l-austenitic-stainless-steel-with-nanotwin-bundles","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/tr\/acta-materialiafracture-behavior-of-heterogeneous-nanostructured-316l-austenitic-stainless-steel-with-nanotwin-bundles\/","title":{"rendered":"Acta Materialia: Nanotwin demetleriyle heterojen nanoyap\u0131l\u0131 316L \u00f6stenitik paslanmaz \u00e7eli\u011fin k\u0131r\u0131k davran\u0131\u015f\u0131"},"content":{"rendered":"<div class=\"vgblk-rw-wrapper limit-wrapper\">\n<p>\u00d6stenitik paslanmaz \u00e7elik iyi korozyon direncine ve oksidasyon direncine sahiptir, ancak g\u00fcc\u00fc 300 MPa&#039;dan daha d\u00fc\u015f\u00fckt\u00fcr, bu da end\u00fcstride \u00f6stenitik paslanmaz \u00e7elik uygulamas\u0131n\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde s\u0131n\u0131rlar. G\u00fcn\u00fcm\u00fczde, tane boyutunu submikronlara ve hatta nanometrelere plastik olarak daraltarak \u00f6stenitik paslanmaz \u00e7eli\u011fin g\u00fc\u00e7lendirilmesi etkili bir \u00f6nlemdir. Bununla birlikte, gerinim sertle\u015fmesi ve mukavemet b\u00fct\u00fcnl\u00fc\u011f\u00fc, ikiz s\u0131n\u0131rlarda ve k\u00fc\u00e7\u00fck taneler i\u00e7inde biriken y\u00fcksek yo\u011funluklu \u00e7\u0131k\u0131klar nedeniyle b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azal\u0131r. \u015eu anda, nano ikiz demetleri taraf\u0131ndan \u00fcretilen k\u0131r\u0131lma sertle\u015ftirme mekanizmas\u0131 hala belirsizdir. Acta Materialia&#039;da. Bu makalede, ara\u015ft\u0131rmac\u0131lar nano ikizlenmi\u015f 316L paslanmaz \u00e7eliklerin farkl\u0131 s\u0131cakl\u0131klarda ve farkl\u0131 plastik su\u015flarda tavlanm\u0131\u015f k\u0131r\u0131lma toklu\u011funu test ederek, nanokristal matrislerde nano ikizlenmenin sertle\u015fme mekanizmas\u0131n\u0131 hasara kar\u015f\u0131 ortaya koydu ve en uygun \u0131s\u0131l i\u015flem s\u00fcrecini buldu. G\u00fcc\u00fc ve dayan\u0131kl\u0131l\u0131\u011f\u0131 en iyi e\u015fle\u015fmeyi sa\u011flar. \u015eekil 1 K\u0131r\u0131k toklu\u011fu ve \u00e7ekme testleri i\u00e7in kullan\u0131lan \u00f6rneklerin \u015fematik diyagram\u0131 \u015eekil 2 DPD 316L paslanmaz \u00e7elikten TEM g\u00f6r\u00fcnt\u00fcs\u00fc (a) DMD 316L paslanmaz \u00e7elik kesit TEM g\u00f6r\u00fcnt\u00fcs\u00fc \u03b5 = 1.6 (b ) Nano boyutlu deforme olmu\u015f ikizler (c) Uzat\u0131lm\u0131\u015f nano ikiz matrisFig.3 720 \u00b0 CFigure 4 k\u0131r\u0131k toklu\u011funda 20 dakika tavlama i\u00e7in \u03b5 = 1.6 ile DPD 316L paslanmaz \u00e7elik kesit TEM g\u00f6r\u00fcnt\u00fcs\u00fc (a) \u0130\u015flem g\u00f6rmemi\u015f DPD&#039;nin y\u00fck deplasman e\u011frileri Farkl\u0131 plastik su\u015flarda 316L paslanmaz \u00e7elik (b) D = 1.6 (c) i\u00e7in farkl\u0131 s\u0131cakl\u0131klarda tavlanm\u0131\u015f DPD 316L paslanmaz \u00e7elik y\u00fck de\u011fi\u015ftirme e\u011frileri, \u015eekil (a) (d) &#039;de kar\u015f\u0131l\u0131k gelen J-integral \u00e7atlak a\u00e7ma e\u011frisi \u015eekil 5&#039;teki J-integral \u00e7atlak a\u00e7ma e\u011frisi \u015eekil 5 DPD 316L paslanmaz \u00e7elik numunenin k\u0131r\u0131k y\u00fczeyinin SEM g\u00f6r\u00fcnt\u00fcs\u00fc (a) \u03b5 = 0.4 (b) \u03b5 = 1.6 (c) \u03b5 = 1.6, 710 \u00b0 C tavlama 20 dakika 6 k\u0131r\u0131k morfoloji analizi (a, b) \u03b5 = 1.6 oldu\u011funda, k\u0131r\u0131k iki par\u00e7an\u0131n k\u0131r\u0131k y\u00fczeyi (c, d) (a, b) &#039;ye kar\u015f\u0131l\u0131k gelen CLSM diyagram\u0131 \u015eekil 7 DPD 316L paslanmaz \u00e7eli\u011fin tip = 1,6 ile \u00e7atlak ucu g\u00f6r\u00fcn\u00fcm\u00fc a = DPD 316L paslanmaz \u00e7eli\u011fin \u00e7atlak ucunun morfolojisi = 1.6 (b) \u015eekil (a) (c) &#039;de b kutusunun b\u00fcy\u00fct\u00fclm\u00fc\u015f g\u00f6r\u00fcnt\u00fcs\u00fc \u015eekil (a) \u015eek. 8 \u00c7atlak yay\u0131l\u0131m\u0131n\u0131n \u015fematik diyagram\u0131 (a) Bo\u015fluklar\u0131n \u00e7ekirde\u011fi \u00e7ekilmesi ve nanokristalin matrislerde b\u00fcy\u00fcme (b) \u00c7atlaklar nanotitanyum \u0131\u015f\u0131n\u0131 \u00e7evreler ve nanotinli \u0131\u015f\u0131n \u00e7atlak yay\u0131l\u0131m\u0131n\u0131 engeller (c) Nano ikiz demetleri \u00e7ekilir ve u\u00e7lar\u0131nda bo\u015f \u00e7ekirdekler \u00e7ekilir (d) Nano ikiz demetlerden bir mesafede kesme \u00e7atlaklar\u0131 \u00fcretin ve nano ikiz demetleri b\u0131rak\u0131n (e) K\u0131r\u0131lma y\u00fczeyinin i\u00e7b\u00fckey ve d\u0131\u015fb\u00fckey oldu\u011fu \u00e7ukur \u015feklindeki b\u00f6l\u00fcm. 9 K\u0131r\u0131lma toklu\u011fu ve akma dayan\u0131m\u0131 e\u011frileri \u00d6zet Nano nano iplik\u00e7ikler, nanokristalin matristeki bo\u015fluklar\u0131n olu\u015fumunun bast\u0131r\u0131lmas\u0131nda ve mekanik \u00f6zelliklerin geli\u015ftirilmesinde \u00f6nemli bir rol oynamaktad\u0131r. Ayn\u0131 zamanda, nano ikiz teller \u00e7atlak ilerlemesini bask\u0131layabilir ve k\u0131r\u0131lma direncini b\u00fcy\u00fck \u00f6l\u00e7\u00fcde art\u0131rabilir. Tavlama i\u015flemi ile, de\u011fi\u015fken iri nanokristal taneler yeniden kristalle\u015fmi\u015f tanelere veya yeniden kristalle\u015fmi\u015f tanelere d\u00f6n\u00fc\u015f\u00fcr ve sonu\u00e7ta elde edilen nano ikiz \u0131\u015f\u0131n\u0131 sertle\u015ftirme etkisini art\u0131rabilir. Nano ikizlenmi\u015f \u00e7eli\u011fin akma dayan\u0131m\u0131 1 GPa&#039;ya ula\u015fabilir ve k\u0131r\u0131lma toklu\u011fu yakla\u015f\u0131k 140 MPa m1 \/ 2&#039;dir. Referans: Heterojen nanoyap\u0131l\u0131 316L \u00f6stenitik paslanmaz \u00e7eli\u011fin nanotwin demetleriyle k\u0131r\u0131lma davran\u0131\u015f\u0131 (Acta Materialia, 2018, doi.org\/10.1016\/ j.actamat.2018.02.065).<br \/>\nKaynak: Meeyou Carbide<\/p>\n<\/div>\n<p><!-- .vgblk-rw-wrapper --><\/p>","protected":false},"excerpt":{"rendered":"<p>Giri\u015f\u00d6stenitik paslanmaz \u00e7elik, iyi bir korozyon direncine ve oksidasyon direncine sahiptir, ancak g\u00fcc\u00fc, end\u00fcstride \u00f6stenitik paslanmaz \u00e7eli\u011fin uygulanmas\u0131n\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde s\u0131n\u0131rlayan 300 MPa&#039;dan azd\u0131r. \u015eu anda, \u00f6stenitik paslanmaz \u00e7eli\u011fi plastik olarak tanecik boyutunu mikron alt\u0131 ve hatta nanometrelere \u00e7ekerek g\u00fc\u00e7lendirmek i\u00e7in etkili bir \u00f6nlemdir. Ancak gerinim sertle\u015ftirme\u2026<\/p>","protected":false},"author":1,"featured_media":1545,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92],"tags":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/1544"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/comments?post=1544"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/1544\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/media?parent=1544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/categories?post=1544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/tags?post=1544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}