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½ð°ÙÁª»úµç > Öá³ÐÐÂÎÅÁбí >¼¤¹âº¸½ÓÌõ¼þÏÂSiCw/6061AlÂÁ»ù¸´ºÏ²ÄÁϽçÃæ·´Ó¦Ñо¿
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£ÛÕªÒª£Ý¡¡Ñо¿Á˼¤¹âº¸½ÓÌõ¼þÏÂSiCw/6061AlÂÁ»ù¸´ºÏ²ÄÁϵĽçÃæ·´Ó¦£¬Ì½ÌÖÁ˼¤¹âÊä³ö¹¦ÂÊ¡¢¼¤¹âÂö³åƵÂʵȺ¸½Ó¹¤ÒÕ²ÎÊý¶Ô¸Ã²ÄÁϽçÃæ·´Ó¦µÄÓ°Ïì¡£½á¹û±íÃ÷£º¼¤¹âº¸½ÓÌõ¼þÏÂSiCw/6061AlÂÁ»ù¸´ºÏ²ÄÁϿɺ¸ÐÔ²îµÄÔÒòÖ÷ÒªÊÇÓë»ùÌå6061AlÂÁºÏ½ðºÍÔöÇ¿ÏàSiC¾§Ðë¼äµÄ½çÃæ·´Ó¦Al£¨l£©+SiC£¨s£© ¡ú Al4C3£¨s£©+Si£¨s£©Óйأ¬¼¤¹âÊä³ö¹¦ÂÊÊÇÓ°Ïì½çÃæ·´Ó¦³Ì¶ÈµÄÖ÷Òªº¸½Ó¹¤ÒÕ²ÎÊý¡£ÔÚ´Ë»ù´¡Éϳɹ¦ÊµÏÖÁËSiCw/6061AlÂÁ»ù¸´ºÏ²ÄÁϵļ¤¹âº¸½Ó¡£¡¡¡¡¹Ø¼ü´Ê¡¡ÂÁ»ù¸´ºÏ²ÄÁÏ¡¡¼¤¹âÊä³ö¹¦ÂÊ¡¡½çÃæ·´Ó¦ Study of Interface Reaction and Effecting Factor of AluminiumMatrix Composite under Laser Welding ConditionLiu Liming¡¡Niu Jitai¡¡Tian YanhongNational Key Laboratory of Advanced Welding Production Technology,HIT¡¡¡¡£ÛAbstract£Ý¡¡Interface reaction of aluminium matrix composite SiC/6061Al in the welded joint subjected to laser welding was studied. Effects of laser output power and pulse frequency welding parameters on interface reaction were also investigated. The results show that main reason for bad weldability of the composite concernes with interface reaction during the welding£¬that is£º4Al£¨l£©+3SiC£¨s£© ¡ú Al4C3£¨s£©+Si£¨s£©. The study proves that the laser welding can be successfully used in the welding of SiCw/6061Al aluminium matrix composite.¡¡¡¡Keywords¡¡aluminium matrix composite¡¡laser output power¡¡interface reaction ¡¡¡¡¡¡ÂÁ»ù¸´ºÏ²ÄÁÏ×÷ΪһÖÖÐÂÐ˲ÄÁÏ£¬ÓÉÓÚÆä¾ßÓи߱ÈÇ¿¶È¡¢¸ß±ÈÄ£Á¿¡¢Ä͸ßΡ¢¿¹·øÉä¡¢³ß´çÎȶ¨ÐԺõÈÓÅÒìµÄ×ÛºÏÐÔÄܶøÊܵ½ÈËÃǵĹ㷺¹Ø×¢£¬²¢½«Öð²½È¡´ú²¿·Ö´«Í³µÄ½ðÊô²ÄÁ϶ø¹ã·ºÓ¦ÓÃÓÚº½¿Õ¡¢º½Ìì¡¢Æû³µÖÆÔìÒµµÈÁìÓò£¬³ÉΪµ±½ñ½ðÊô»ù¸´ºÏ²ÄÁÏ·¢Õ¹ÓëÑо¿µÄÖ÷Á÷¡£ÂÁ»ù¸´ºÏ²ÄÁϵĺ¸½ÓÊÇÐγɽṹ¼þ±Ø²»¿ÉÉٵļӹ¤ÊֶΡ£ÓÉÓÚ¸ÃÖÖ²ÄÁÏ»ùÌåÓëÔöÇ¿Ïà¼äÎïÀíÐÔÖÊ£¨ÈçÈ۵㡢µç×èÂʵȣ©Ïà²îºÜ´ó£¬ÔÚ¸ßÎÂÏ»ùÌåÓëÔöÇ¿ÏàÖ®¼ä¼«ÈÝÒ×·¢Éú½çÃæ·´Ó¦£¬Éú³É´àÐÔ»¯ºÏÎºÜÄÑÐγÉÓÅÖʺ¸½Ó½ÓÍ·£Û1£¬2£Ý¡£ËùÒÔ£¬Ñо¿ºÍ¿ØÖÆÔÚº¸½ÓÌõ¼þÏÂÂÁ»ù¸´ºÏ²ÄÁϵĽçÃæ·´Ó¦¶Ô¸ÃÖÖ²ÄÁϵÄʵ¼ÊÓ¦ÓþßÓÐÖØÒªÒâÒå¡£¡¡¡¡±¾¹¤×÷ͨ¹ýϵÁÐÊÔÑéÑо¿Á˼¤¹âº¸Ìõ¼þÏÂÂÁ»ù¸´ºÏ²ÄÁÏSiCw/6061Al½çÃæ·´Ó¦¼°ÆäÓ°ÏìÒòËØ£¬Ö¸³öÁ˸ÃÖÖ²ÄÁϿɺ¸ÐÔ²îµÄÔÒòÖ÷ÒªÓ뺸½Ó¹ý³ÌÖлùÌåÓëÔöÇ¿Ïà¼äµÄ½çÃæ·´Ó¦Óйأ¬¼¤¹âÊä³ö¹¦ÂÊÊÇÓ°Ïì½çÃæ·´Ó¦³Ì¶ÈµÄÖ÷Òªº¸½Ó¹¤ÒÕ²ÎÊý¡£1¡¡ÊÔÑé²ÄÁϼ°·½·¨ 1.1¡¡ÊÔÑé²ÄÁÏ¡¡¡¡²ÉÓü·Ñ¹ÖýÔì·¨ÖƱ¸ÂÁ»ù¸´ºÏ²ÄÁÏSiCw/6061Al¡£ÔöÇ¿ÏàSiC¾§Ðëƽ¾ùÖ±¾¶Îª0.5¦Ìm£¬Ìå»ý±ÈΪ20%¡£¸Ã¸´ºÏ²ÄÁÏÔÚÍË»ð״̬ÏÂÀÉìÇ¿¶ÈΪ220MPa¡£»ùÌå6061AlµÄ»¯Ñ§³É·ÖÈçϱíËùʾ¡£±í¡¡6061AlµÄ»¯Ñ§³É·Ö£¨wt%£©Table ¡¡Chemical compositions of 6061Al alloy£¨wt%£©CuMgMnFeSiZnTiNiAl0.340.750.220.361.26£¼0.15£¼0.05£¼0.05Óà1.2¡¡ÊÔÑé²½Öè¡¡¡¡(1£©²ÉÓÃÏßÇиîµÄ·½·¨½«²ÄÁϼӹ¤³É2mm¡Á10mm¡Á30mmº¸¼þ£»¡¡¡¡(2£©½«ÊÔ¼þ½øÐжԽÓƽº¸£¬º¸½ÓÉ豸ΪÃÀ¹ú²úYAG¹ÌÌåÂö³åʽ¼¤¹â¼Ó¹¤»ú£¬Æä×î´ó¹¦ÂÊΪ400W£¬Âö³åƵÂÊ1¡«200Hz£¬Âö³å¿í¶È0.3¡«7.4ms£¬²¨³¤106¦Ìm£»¡¡¡¡(3£©ÔÚInstron¹«Ë¾²úµÄµç×ÓÍòÄÜÊÔÑé»úÉϽøÐк¸½Ó½ÓÍ·ÀÉì²âÊÔ£¬ÀÉìËÙ¶ÈΪ0.5mm/min;¡¡¡¡(4£©·Ö±ð²ÉÓù⾵¡¢SEMºÍTEM·ÖÎöÔÚ¼¤¹âº¸Ìõ¼þÏÂÂÁ»ù¸´ºÏ²ÄÁÏ΢¹Û×éÖ¯¼°½çÃæ·´Ó¦Éú³ÉÎï¡£2¡¡½çÃæÐÐΪÑо¿ ¡¡¡¡Í¼1ΪµäÐ͵ļ¤¹âº¸Ìõ¼þϺ¸·ì×éÖ¯ÕÕƬ£¬¿ÉÒÔ·¢ÏÖº¸·ìÖгöÏÖÁ˹è¿é£¬¾§Ðë±äµÃºÜϸ£¬ËµÃ÷»ùÌåÓëÔöÇ¿ÏàÖ®¼ä·¢ÉúÁ˽çÃæ·´Ó¦¡£ÂÁ»ù¸´ºÏ²ÄÁÏSiCw/6061Alĸ²ÄÓ뺸·ìµÄ͸Éäµç¾µÕÕƬÈçͼ2Ëùʾ£¬Ä¸²ÄÖÐÔöÇ¿ÏàSiCÓë»ùÌåAl¼ä½çÃæ¸É¾»£¬ÎÞ·´Ó¦Îï²úÉú£»¶øº¸·ìÖÐÔöÇ¿ÏàSiCÓë»ùÌåAl¼äÓз´Ó¦Îï³öÏÖ£¬¾ÑÜÉä·ÖÎö£¬·´Ó¦Éú³ÉÎïΪAl4C3¡£ [img]http://www.icad.com.cn/wencui/UploadFiles_3722/200805/20080512115746922.gif[/img]ͼ1¡¡SiCw/6061Al¼¤¹âº¸º¸·ìÏÔ΢×éÖ¯¡¡¡Á1000Fig.1¡¡Microstructure of SiCw/6061Al welded joint at laser beam [img]http://www.icad.com.cn/wencui/UploadFiles_3722/200805/20080512115746847.gif[/img] [img]http://www.icad.com.cn/wencui/UploadFiles_3722/200805/20080512115746649.gif[/img]ͼ2¡¡Ä¸²Ä¼°º¸·ìTEMÕÕƬ¡¡¡Á4500¡¡(a)ĸ²Ä£»(b)º¸·ìFig.2¡¡Transmission electron micrographs of parent £¨a) and weld (b)¡¡¡Á4500¡¡¡¡ÕâÊÇÓÉÓÚ£¬ÔÚ¼¤¹âº¸½ÓÂÁ»ù¸´ºÏ²ÄÁÏʱ£¬¸´ºÏ²ÄÁÏÒÀ¿¿ÎüÊÕ¼¤¹âÊøÄÜÁ¿¶øÈÛ»¯£¬²ÄÁ϶Լ¤¹âÊøµÄÎüÊÕÂʦÁÈ¡¾öÓÚÆäµç×èÂʼ°¼¤¹âµÄ²¨³¤£¬¿ÉÓÃÏÂʽ±íʾ£Û3£Ý£º[img]http://www.icad.com.cn/wencui/UploadFiles_3722/200805/20080512115746105.gif[/img]ʽÖУº¦ÑΪµç×èÂÊ£¬¦ËΪ¼¤¹â²¨³¤ £¬¦ÁΪÎüÊÕÂÊ¡£¡¡¡¡ÓÉÉÏʽ¿ÉÖª£¬ÔÚ¼¤¹âº¸½ÓÂÁ»ù¸´ºÏ²ÄÁÏSiCw/6061Al ʱ£¬ÓÉÓÚÔöÇ¿ÏàSiCµÄµç×èÂʱȻùÌåAl´óµÃ¶à£¬Òò´ËÔöÇ¿ÏàSiC¶Ô¼¤¹âµÄÎüÊÕÂʱȻùÌåAl´óµÃ¶à£¬Ê¹µÃ¼¤¹âÊøÕÕÉä´¦ÔöÇ¿ÏàSiCÓÅÏÈÎüÈÈ£¬±»Ñ¸ËÙ¼ÓÈȵ½ºÜ¸ßµÄζȣ¬ÔÙͨ¹ýÈÈ´«µ¼¼ÓÈÈ»ùÌåÂÁºÏ½ð£¬ÕâÖÖ¼ÓÈÈ»úÖÆʹµÃÔöÇ¿ÏàSiC¼°Æ丽½üµÄ»ùÌåAlζÈÒªÔ¶¸ßÓÚÈ۳صÄƽ¾ùζȣ¬Õâ¾ÍºÜÈÝÒ×·¢Éú½çÃæ·´Ó¦¡£ÈÛÈÚµÄ AlÔڽϸßζÈϽ«ÓëSiC·¢ÉúÈçÏ·´Ó¦£Û4£Ý£º4Al£¨Òº£©+3SiC£¨¹Ì£© ¡ú Al4C3£¨¹Ì£©+Si£¨¹Ì) 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welding¡¡¡¡´Ëʽ·´Ó³Á˺¸½ÓζÈT¡¢¹è»î¶È¦ÁSi¶Ô¦¤GµÄÓ°Ïì¡£º¸½ÓζÈTÔ½¸ß£¬¦¤GÒ²¾ÍԽС£¬½çÃæ·´Ó¦¾ÍÔ½Ò×½øÐУ»ÈÛ³ØÖÐSiµÄŨ¶ÈÔ½´óÔò¦ÁSiµÄÖµÔ½´ó£¬¦¤GÒ²¾ÍÔ½´ó£¬½çÃæ·´Ó¦¾ÍÔ½²»Ò×·¢Éú¡£´Ë·´Ó¦Òѱ»Êµ¼ùËùÖ¤Ã÷£¬ÔÚ1000KÒÔÏ£¬¦¤G½ÏС£¬£¨1£©Ê½·´Ó¦ºÜС£¬Õâ¾ÍÊDzÉÓÃѹÖý·¨ÖÆÔìÂÁ»ù¸´ºÏ²ÄÁϹý³ÌÖÐδ³öÏÖ½çÃæ·´Ó¦Î¶øÔÚ¼¤¹âº¸º¸·ìÖÐÈ´³öÏÖ½çÃæ·´Ó¦µÄÔÒò¡£¡¡¡¡ÓÉÓÚÔÚ¼¤¹âº¸½ÓÌõ¼þÏÂÂÁ»ù¸´ºÏ²ÄÁϽçÃæ·´Ó¦µÄºê¹Û±íÏÖΪº¸·ìÁ¦Ñ§ÐÔÄܵÄËðʧ£¬Òò´Ëͨ¹ý²âÊÔº¸·ì½ÓÍ·Ç¿¶ÈµÄ±ä»¯¿É¼ä½Ó±íÃ÷º¸½Ó¹æ·¶²ÎÊý¶ÔÂÁ»ù¸´ºÏ²ÄÁϽçÃæ·´Ó¦µÄÓ°Ïì¡£º¸½Ó¹æ·¶¶ÔÂÁ»ù¸´ºÏ²ÄÁϺ¸·ì½ÓÍ·Ç¿¶ÈµÄÓ°ÏìÈçͼ5Ëùʾ¡£ [img]http://www.icad.com.cn/wencui/UploadFiles_3722/200805/20080512115746299.gif[/img]ͼ5¡¡¼¤¹âº¸½Ó²ÎÊý¶Ô½ÓÍ·Ç¿¶ÈµÄÓ°ÏìFig.5¡¡Effects of process parameters of laser welding on tensile strength of welded 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