{"id":674371,"date":"2024-10-19T19:49:44","date_gmt":"2024-10-19T18:49:44","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=674371"},"modified":"2024-10-19T19:49:44","modified_gmt":"2024-10-19T18:49:44","slug":"anh-huong-cua-nhiet-do-den-su-moi-kim-loai","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/anh-huong-cua-nhiet-do-den-su-moi-kim-loai\/","title":{"rendered":"\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn s\u1ef1 m\u1ecfi kim lo\u1ea1i"},"content":{"rendered":"<p class=\"sidekick\">\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn s\u1ef1 m\u1ecfi kim lo\u1ea1i: T\u00ecm hi\u1ec3u c\u00e1ch nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i \u1ea3nh h\u01b0\u1edfng t\u1edbi tu\u1ed5i th\u1ecd v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c kim lo\u1ea1i trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/anh_huong_cua_nhiet_do_den_su_moi_kim_loai.png\" alt=\"\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn s\u1ef1 m\u1ecfi kim lo\u1ea1i\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u1ea2nh h\u01b0\u1edfng c\u1ee7a Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn S\u1ef1 m\u1ecfi Kim lo\u1ea1i<\/h2>\n<p>M\u1ecfi kim lo\u1ea1i l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh v\u1eadt l\u00fd m\u00e0 trong \u0111\u00f3 kim lo\u1ea1i b\u1ecb suy y\u1ebfu d\u1ea7n do s\u1ef1 t\u00e1c \u0111\u1ed9ng li\u00ean t\u1ee5c c\u1ee7a \u1ee9ng su\u1ea5t. Nhi\u1ec7t \u0111\u1ed9 l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 v\u00e0 m\u1ee9c \u0111\u1ed9 m\u1ecfi kim lo\u1ea1i. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn qu\u00e1 tr\u00ecnh m\u1ecfi kim lo\u1ea1i.<\/p>\n<h2>M\u1ecfi Kim lo\u1ea1i l\u00e0 g\u00ec?<\/h2>\n<p>M\u1ecfi kim lo\u1ea1i x\u1ea3y ra khi kim lo\u1ea1i ph\u1ea3i ch\u1ecbu \u1ee9ng su\u1ea5t dao \u0111\u1ed9ng (thay \u0111\u1ed5i li\u00ean t\u1ee5c) qua h\u00e0ng ngh\u00ecn, th\u1eadm ch\u00ed h\u00e0ng tri\u1ec7u chu k\u1ef3. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c v\u1ebft n\u1ee9t nh\u1ecf b\u00ean trong kim lo\u1ea1i, v\u00e0 khi c\u00e1c v\u1ebft n\u1ee9t n\u00e0y lan r\u1ed9ng, kim lo\u1ea1i s\u1ebd g\u00e3y ho\u1eb7c h\u01b0 h\u1ecfng.<\/p>\n<h2>\u1ea2nh h\u01b0\u1edfng c\u1ee7a Nhi\u1ec7t \u0111\u1ed9<\/h2>\n<ul>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p:<\/strong> \u1ede nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, kim lo\u1ea1i tr\u1edf n\u00ean c\u1ee9ng h\u01a1n v\u00e0 \u00edt d\u1ebbo dai, l\u00e0m t\u0103ng nguy c\u01a1 n\u1ee9t g\u00e3y. Qu\u00e1 tr\u00ecnh n\u00e0y g\u1ecdi l\u00e0 &#8220;m\u1ecfi l\u1ea1nh&#8221;.<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 cao:<\/strong> \u1ede nhi\u1ec7t \u0111\u1ed9 cao, kim lo\u1ea1i c\u00f3 xu h\u01b0\u1edbng tr\u1edf n\u00ean m\u1ec1m h\u01a1n v\u00e0 d\u1ebbo dai h\u01a1n, l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh m\u1ecfi. Tuy nhi\u00ean, n\u1ebfu nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao, kim lo\u1ea1i s\u1ebd m\u1ea5t \u0111i m\u1ed9t ph\u1ea7n c\u1ea5u tr\u00fac c\u01a1 h\u1ecdc, d\u1eabn \u0111\u1ebfn suy gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng \u1ee9ng su\u1ea5t.<\/li>\n<\/ul>\n<h2>\u0110\u1ed9ng h\u1ecdc c\u1ee7a M\u1ecfi Kim lo\u1ea1i Theo Nhi\u1ec7t \u0111\u1ed9<\/h2>\n<p>S\u1ef1 m\u1ecfi kim lo\u1ea1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh S-N (\u1ee9ng su\u1ea5t- s\u1ed1 chu k\u1ef3). \u0110\u01b0\u1eddng cong S-N bi\u1ec3u di\u1ec5n m\u1ed1i quan h\u1ec7 gi\u1eefa bi\u00ean \u0111\u1ed9 \u1ee9ng su\u1ea5t v\u00e0 s\u1ed1 l\u01b0\u1ee3ng chu k\u1ef3 m\u00e0 kim lo\u1ea1i c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng tr\u01b0\u1edbc khi g\u00e3y. Khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i, h\u00ecnh d\u1ea1ng c\u1ee7a \u0111\u01b0\u1eddng cong S-N c\u0169ng thay \u0111\u1ed5i:<\/p>\n<ul>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p:<\/strong> \u0110\u01b0\u1eddng cong S-N d\u1ecbch chuy\u1ec3n xu\u1ed1ng d\u01b0\u1edbi, ngh\u0129a l\u00e0 s\u1ed1 chu k\u1ef3 t\u1ed1i \u0111a gi\u1ea3m.<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 cao:<\/strong> \u0110\u01b0\u1eddng cong S-N d\u1ecbch chuy\u1ec3n l\u00ean tr\u00ean, s\u1ed1 chu k\u1ef3 t\u1ed1i \u0111a t\u0103ng.<\/li>\n<\/ul>\n<h2>C\u00e1c Bi\u1ec7n ph\u00e1p Gi\u1ea3m Thi\u1ec3u M\u1ecfi Kim lo\u1ea1i<\/h2>\n<ol>\n<li><strong>Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0111\u1ed9:<\/strong> Duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng trong kho\u1ea3ng an to\u00e0n \u0111\u1ec3 tr\u00e1nh l\u00e0m suy y\u1ebfu kim lo\u1ea1i.<\/li>\n<li><strong>X\u1eed l\u00fd Nhi\u1ec7t:<\/strong> Qu\u00e1 tr\u00ecnh nh\u01b0 t\u00f4i v\u00e0 \u1ee7 c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng c\u1ee7a kim lo\u1ea1i.<\/li>\n<li><strong>Thi\u1ebft k\u1ebf Ki\u1ebfn tr\u00fac:<\/strong> Thi\u1ebft k\u1ebf sao cho gi\u1ea3m thi\u1ec3u c\u00e1c \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t, nh\u01b0 g\u00f3c c\u1ea1nh s\u1eafc nh\u1ecdn v\u00e0 l\u1ed7 nh\u1ecf.<\/li>\n<\/ol>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Nhi\u1ec7t \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng m\u1ea1nh m\u1ebd \u0111\u1ebfn s\u1ef1 m\u1ecfi kim lo\u1ea1i, thay \u0111\u1ed5i t\u1ef7 l\u1ec7 m\u00e0 kim lo\u1ea1i ch\u1ecbu \u0111\u1ef1ng s\u1ef1 m\u1ecfi tr\u01b0\u1edbc khi h\u1ecfng. B\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 s\u1eed d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt h\u1ee3p l\u00fd, ch\u00fang ta c\u00f3 th\u1ec3 t\u0103ng tu\u1ed5i th\u1ecd c\u1ee7a kim lo\u1ea1i trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn s\u1ef1 m\u1ecfi kim lo\u1ea1i: T\u00ecm hi\u1ec3u c\u00e1ch nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i \u1ea3nh h\u01b0\u1edfng t\u1edbi tu\u1ed5i th\u1ecd v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c kim lo\u1ea1i trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - 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