·ÖÏí£º²¹º¸¶Ô£µA£°£¶ÂÁºÏ½ðº¸½Ó½ÓÍ·Á¦Ñ§ÐÔÄܵÄÓ°Ïì
ÕžÙ÷룱,£²,ÀÌΣ±,ÕÅ»ªËÉ£³,ͯÃ÷²¨£±
(£±£®ÄϾ©º½¿Õº½Ìì´óѧ,·ÉÐÐÆ÷ÏȽøÉè¼Æ¼¼Êõ¹ú·ÀÖصãѧ¿ÆʵÑéÊÒ,ÄϾ© £²£±£°£°£±£¶;
£²£®Öйúº½·¢ÉÌÓú½¿Õ·¢¶¯»úÓÐÏÞÔðÈι«Ë¾,ÉϺ£ £²£°£°£²£´£±;
£³£®Öйúµç×ӿƼ¼¼¯ÍŹ«Ë¾µÚÎåÊ®ÎåÑо¿Ëù,ÄϾ© £²£±£°£°£±£¶)
Õª Òª:ÒÔ£µA£°£¶ÂÁºÏ½ðº¸½ÓÄ£Äâ¼þµÄÒ»´Îº¸½Ó½ÓÍ·ºÍ¶þ´Îº¸½Ó(²¹º¸)½ÓͷΪÑо¿¶ÔÏó,ͨ¹ýÀÉìÊÔÑ顢ƣÀÍÊÔÑé,ÒÔ¼°¶ÔÆ£ÀͶϿÚÐÎò¹Û²ì,Ñо¿Á˲¹º¸¶Ô¸Ãº¸½Ó½ÓÍ·Á¦Ñ§ÐÔÄܵÄÓ°Ïì.½á¹û±íÃ÷:²¹º¸»áÔì³Éº¸½Ó½ÓÍ·Á¦Ñ§ÐÔÄܵÄϽµ,ÆäÖо²Ç¿¶ÈºÍÖÐֵƣÀÍÇ¿¶ÈϽµÃ÷ÏÔ;º¸·ìÊǽÓÍ·ÀÉìÇ¿¶ÈÓëÆ£ÀÍÐÔÄܵı¡Èõ²¿Î»,²¹º¸»áÔì³Éº¸·ì¸½½ü½ðÊô¾§Á£´Ö´ó.
¹Ø¼ü´Ê:£µA£°£¶ÂÁºÏ½ð;º¸½ÓÄ£Äâ¼þ;²¹º¸;Æ£ÀÍÐÔÄÜ
ÖÐͼ·ÖÀàºÅ:TG£´£µ£·£®£±£´ ÎÄÏ×±êÖ¾Âë:A ÎÄÕ±àºÅ:£±£°£°£°£Ç£³£·£³£¸(£²£°£±£·)£°£¸£Ç£°£°£¸£´£Ç£°£³
InfluenceofRepairWeldingonMechanicalPropertiesof
£µA£°£¶AluminumAlloyWeldedJoint
ZHANGJulin£±,£²,LIBotao£±,ZHANGHuasong
£³,TONG Mingbo£±
(£±£®MinisterialKeyDisciplineLaboratoryofAdvancedDesignTechnologyofAircraft,NanjingUniversityofAeronauticsandAstronautics,Nanjing£²£±£°£°£±£¶,China;£²£®AECCCommercialAircraftEngineCo£®,Ltd£®,Shanghai£²£°£°£²£´£±,China;£³£®ChinaElectronicsTechnologyGroupCorporationNo£®£µ£µInstitute,Nanjing£²£±£°£°£±£¶,China)
Abstract:Withtheinitialweldedjointandsecond(ropairwelding)weldedjointofthesimulatedweldedpart
of£µA£°£¶aluminumalloyasresearchobjects,theinfluenceofrepairweldingonthemechanicalpropertiesofthe
weldedjointwasstudiedbytensiletest,fatiguetestandfatiguefracturemorphologyobservation£®Theresultsshow
thattherepairweldingdecreasedthe mechanicalpropertiesofthe weldedjoint,especiallydecreasedthestatic
strengthandmedianfatiguestrengthsignificantly£®Theweldseam wastheweakpartoftheweldedjointintensile
strengthandfatigueperformance,andtherepairweldinggaverisetothecoarsegrainsofthemetalnearweldseam£®
Keywords:£µA£°£¶aluminumalloy;simulatedweldedpart;repairwelding;fatigueperformance
£° Òý ÑÔ
£µA£°£¶ÂÁºÏ½ðΪÂÁþϵ·ÀÐâÂÁºÏ½ð,¾ßÓнϸߵÄÇ¿¶ÈºÍÄ͸¯Ê´ÐÔÄÜ.²ÉÓÃë²»¡º¸º¸½Óºó,¸ÃÂÁºÏ½ðº¸½Ó½ÓÍ·µÄº¸·ìÆøÃÜÐÔºÍËÜÐԽϺÃ[£±],Òò´ËÔÚ·É»úÉϵÄÓ¦Óý϶à[£²].·É»úÉÏ´ó¶àÊý½á¹¹¼þÔÚʹÓùý³ÌÖгÐÊÜ׎»±äÔغɵÄ×÷ÓÃ,ÔÚÕâÖÖ·þÒÛ¹¤¿öÏÂ,º¸½Ó½á¹¹ÒײúÉúÓ¦Á¦¼¯ÖÐ,ÔÙ¼ÓÉϺ¸½Ó½á¹¹»¹¿ÉÄÜ´æÔÚº¸½ÓȱÏÝ,ÕâЩ¶¼»áʹº¸½Ó½ÓÍ·µÄÆ£ÀÍÇ¿¶È´ó·ù¶È½µµÍ.º¸½Ó½á¹¹ÖУ·£°£¥ÒÔÉϵÄʧЧ¶¼ÊÇÒòº¸½Ó½ÓÍ·µÄÆ£ÀͶÏÁѶøµ¼ÖµÄ,Òò´Ë,Ñо¿º¸½Ó½ÓÍ·µÄÆ£ÀÍÐÔÄܾßÓÐÖØÒªµÄÒâÒå.
ÔÚº¸½Ó¹ý³ÌÖÐÄÑÒÔ±ÜÃâȱÏݵIJúÉú.ΪÁ˱£Ö¤º¸½Ó½á¹¹µÄÁ¦Ñ§ÐÔÄÜ,ͬʱ½µµÍÉú²ú³É±¾,ÐèÒª¶Ô½ÓÍ·½øÐв¹º¸[£³£Ç£´].½ÓÍ·²¹º¸ºóÓпÉÄܶԺ¸½Ó½á¹¹µÄ³ÐÔØÄÜÁ¦ÓÈÆäÊÇÆ£ÀÍÐÔÄÜÔì³É²»ÀûµÄÓ°Ïì,µ«Óйش˷½ÃæµÄÑо¿±¨µÀ²¢²»¶à¼û.Ϊ´Ë,×÷ÕßÕë¶ÔijÐÍ·É»ú½á¹¹µÄ£µA£°£¶ÂÁºÏ½ðº¸½ÓÄ£Äâ¼þµÄÒ»´Îº¸½Ó½ÓÍ·ºÍ¶þ´Î(¼´²¹º¸)º¸½Ó½ÓÍ·½øÐÐÁËÀÉ졢ƣÀÍÊÔÑé,Ñо¿Á˲¹º¸¶Ô£µA£°£¶ÂÁºÏ½ðº¸½Ó½ÓÍ·ÐÔÄܵÄÓ°Ïì,Ϊʵ¼ÊÉú²úÌṩ²Î¿¼ÒÀ¾Ý.
£± ÊÔÑùÖƱ¸ÓëÊÔÑé·½·¨
£±£®£± ÊÔÑùÖƱ¸
ÊÔÑé²ÄÁÏΪ£µA£°£¶ÂÁºÏ½ð,ºñ¶ÈΪ£²mm,Æ仯ѧ³É·ÖÈç±í£±Ëùʾ.
°´ÕÕ HB/Z£±£±£¹££²£°£±£±,¶Ô£µA£°£¶ÂÁºÏ½ð·Ö±ð½øÐÐÒ»´Îº¸½Ó(²»²¹º¸,£±££ ½ÓÍ·)ºÍ¶þ´Îº¸½Ó(¼´Ò»´Îº¸½Óºó²¹º¸,£²££ ½ÓÍ·).Ò»´Îº¸½ÓΪ벻¡º¸,º¸Ë¿Îª£µA£°£¶ÂÁºÏ½ð,º¸½ÓµçÁ÷Ϊ£±£¸£°~£²£²£°A,ë²ÆøÁ÷Á¿Îª£±£²~£±£´L??min££±,Åç×ì¿×Ö±¾¶Îª£¸~£±£°mm,ËÍË¿ËÙ¶ÈΪ£±£°£¸~£±£±£·cm??min££±.¶Ôº¸º¸½Óʱ²»¿ªÆ¿Ú,Ö±½Óº¸½Ó,µ¥ÃæÒ»´Îº¸Í¸.º¸·ìΪ¶þ¼¶º¸·ì,º¸½ÓµÄÆ𻡵ãºÍÊÕ»¡µã»ù±¾Î»ÓÚº¸·ìÖеã,ÔÚÈ¡Ñùʱ±Ü¿ªÆ𻡵ãºÍÊÕ»¡µã.¶þ´Îº¸½Óʱ,ÏȽ«Ò»´Îº¸½Ó½ÓÍ·Óûúе¼Ó¹¤µÄ·½Ê½Ä¥Æ½º¸·ì,È»ºóÔÚÔÓк¸·ìÉϽøÐв¹º¸,º¸½Ó¹¤ÒÕͬһ´Îº¸½Ó.ºóÐøÊÔÑéÓÃÒ»´Îº¸½Ó½ÓÍ·ºÍ¶þ´Îº¸½Ó½ÓÍ·µÄº¸·ì¾ù²»×öÈκδ¦Àí,±£ÁôÓà¸ß.
°´ÕÕ HB£µ£±£·£µ££±£¹£¸£·¶Ôº¸·ì½øÐÐÎÞËðÉ˼ì²â,±£Ö¤ÊÔÑùûÓÐÃ÷ÏԵĺ¸½ÓȱÏÝ.ËùÓнÓÍ·¾ù½øÐк¸ºó»¯Ñ§Ñõ»¯±íÃæ´¦Àí.
ͼ£± ÊÔÑù³ß´ç
Fig£®£± Specimensize
£±£®£² ÊÔÑé·½·¨
¸ù¾Ý HB£µ£²£¸£·££±£¹£¹£¶,²ÉÓñê×¼ÊÔÑù½øÐÐÀÉìÐÔÄܺÍÆ£ÀÍÐÔÄÜÊÔÑé.ÀÉìÊÔÑùÓëÆ£ÀÍÊÔÑùµÄÐÎ×´ºÍ³ß´çÏàͬ,Èçͼ£±Ëùʾ.º¸·ìλÓÚÊÔÑùÖмä.ÔÚWDW£ÇE£²£°£°£°Ð͵ç×ÓÍòÄÜÊÔÑé»úÉϽøÐÐÀÉìÐÔÄÜÊÔÑé,ÀÉìËÙ¶ÈΪ£²mm??min££±,¸÷²â£´¸öÊÔÑùȡƽ¾ùÖµ.ÀûÓà W£«BLFV£ÇL ÐͶ¯Ì¬Æ£ÀÍÊÔÑé»ú½øÐÐÆ£ÀÍÊÔÑé,Ó¦Á¦±ÈR£½£°,¼ÓÔØƵÂÊΪ£²£°Hz,Æ£Àͼ«ÏÞ
¶ÔÓ¦µÄ¼ÓÔØ´ÎÊýÈ¡£²×£±£°£¶ ÖÜ´Î.Æ£ÀÍÊÔÑé²ÉÓóÉ×é·¨ºÍÉý½µ·¨,Éý½µ·¨ÊÔÑùÊýΪ£±£³¸ö,³É×é·¨²»ÉÙÓÚ£´×é,ÿ×é²»ÉÙÓÚ£µ¸öÊÔÑù.ÀÉìºÍÆ£ÀÍÊÔÑé¾ùÔÚÊÒÎÂϽøÐÐ,Ïà¶Ôʪ¶ÈΪ £µ£°£¥.ÀûÓà KH£Ç£·£·£°£°ÐÍÊý×ÖÏÔ΢¾µ¹Û²ìÆ£ÀͶϿÚÐÎò.
£² ÊÔÑé½á¹ûÓëÌÖÂÛ
£²£®£± ¶ÔÀÉìÐÔÄܵÄÓ°Ïì
£µA£°£¶ÂÁºÏ ½ð ½Ó Í· ĸ ²Ä µÄ ¿¹ À Ç¿ ¶È ʵ ²â Öµ Ϊ£³£´£µMPa.´Ó±í£²ÖпÉÒÔ·¢ÏÖ:£±££ ½ÓÍ·¿¹ÀÇ¿¶È²âÊÔÖµ¾ù´ïµ½ÁËĸ²ÄµÄ£¹£°£¥ÒÔÉÏ;£²££ ½ÓÍ·µÄƽ¾ù¿¹ÀÇ¿¶ÈԼΪ£±££ ½ÓÍ·µÄ£¸£·£®£·£¥,ƽ¾ùÉ쳤ÂÊԼΪ£±££ ½ÓÍ·µÄ£¶£±£®£´£¥,²¹º¸½µµÍÁ˽ÓÍ·µÄÀÉìÐÔÄÜ.ËùÓÐÀÉìÊÔÑù¾ùÔÚº¸·ì´¦¶ÏÁÑ,º¸·ìÊÇ£µA£°£¶ÂÁºÏ½ðº¸½Ó½ÓÍ·µÄ¾²Ç¿¶È±¡Èõ»·½Ú.
£²£®£² ¶ÔÆ£ÀÍÇ¿¶ÈµÄÓ°Ïì
ËùÓнÓÍ·ÊÔÑùµÄÆ£ÀͶÏÁÑλÖþùÔÚº¸·ì´¦,˵Ã÷º¸·ìΪÆäÆ£ÀÍÐÔÄܱ¡Èõ²¿Î».¶ÔÆ£ÀÍÊÔÑéµÃµ½µÄÓ¦Á¦Ë®Æ½ºÍÆ£ÀÍÊÙÃü½øÐÐÏßÐÔÄâºÏ,ÄâºÏ·½³ÌΪSm ??N £½C (£±)ʽÖÐ:S ΪӦÁ¦Ë®Æ½;N ΪÊÔÑùÆ£ÀÍÊÙÃü;m ºÍC Ϊ²ÄÁϳ£Êý.
ÊÔÑé¼°ÄâºÏµÃµ½µÄS£ÇN ÇúÏß¼ûͼ£²,ÄâºÏµÃµ½£±££ ½ÓÍ·µÄ m ºÍC ·Ö±ðΪ£¸£®£¸£·,£·£®£³£¹×£±£°£²£±,£²££ ½ÓÍ·µÄm ºÍC ·Ö±ðΪ£µ£®£´£¸,£´£®£µ£´×£±£°£±£´.
ÓÉͼ£²¿ÉÒÔ¿´³ö:£²££ ½ÓÍ·µÄÆ£ÀÍÇ¿¶ÈʼÖÕµÍÓÚ£±££ ½ÓÍ·µÄ;´Ó¸ßÓ¦Á¦µÍÖÜÆ£ÀÍÇøµ½µÍÓ¦Á¦¸ßÖÜÆ£ÀÍÇø,Ëæ×ÅÑ»·Ó¦Á¦µÄ½µµÍ,£²££ ½ÓÍ·µÄÆ£ÀÍÇ¿¶ÈÓ룱££½ÓÍ·µÄ²îÖµ±ä´ó.È¡£²×£±£°£¶ ÖܴζÔÓ¦µÄÓ¦Á¦Ë®Æ½ÎªÖÐֵƣÀÍÇ¿¶È,Ôò£±££ ºÍ£²££ ½ÓÍ·µÄÖÐֵƣÀÍÇ¿¶È·Ö±ðΪ£µ£¸£®£°,£³£´£®£° MPa,²¹º¸½µµÍÁ˽ÓÍ·µÄÖÐֵƣÀÍÇ¿¶È.
£²£®£³ ¶ÔÆ£ÀͶϿÚÐÎòµÄÓ°Ïì
ÓÉͼ£³¿É ÒÔ ¿´ ³ö:²» ͬ ½Ó Í· ÊÔ Ñù µÄ Æ£ ÀÍ ¶Ï ¿Ú¾ù¿É·Ö³ÉÆ£ ÀÍ ÁÑ ÎÆ Ô´ Çø¡¢Æ£ ÀÍ ÁÑ ÎÆ À© Õ¹ Çø ºÍ ˲ ¶ÏÇø;˲¶ÏÇø±íÃæ±È½Ï´Ö²Ú,Æ£ÀÍÁÑÎÆÔ´ÇøÓëÆ£ÀÍÁÑÎÆÀ©Õ¹Çø±í Ãæ Ôò ½Ï Ϊ ƽ »¬,Õâ ÊÇ ÓÉ ÓÚ ÔÚ Ñ »· ÔØ ºÉ×÷ÓÃÏÂ,ÁÑÎƲ»¶ÏÕÅ¿ª¡¢±ÕºÏ¶øÔì³É.£²££ ½ÓÍ·½üº¸·ìµÄ¾§Á£±È£±££ ½ÓÍ·µÄ´Ö´ó,ÕâÊÇÒòΪ²¹º¸Ê¹º¸·ìÇøÖظ´ÊÜÈÈ,¸½½ü¾§Á£·¢ÉúÔÙÈۺ϶ø¾ÛºÏ³¤´ó¡£
£³ ½á ÂÛ
(£±)Ò» ´Î º¸ ½Ó £µA£°£¶ ÂÁ ºÏ ½ð ½Ó Í· µÄ ¿¹ À Ç¿ ¶ÈΪ£³£±£¸£®£¹£² MPa,ÖÐ Öµ Æ£ ÀÍ Ç¿ ¶È Ϊ £µ£¸£®£° MPa;²¹ º¸ºó½ÓÍ·µÄ¿¹ÀÇ¿¶ÈΪ£²£·£¹£®£¹£µ MPa,ÖÐֵƣÀÍÇ¿¶ÈΪ£³£´£®£° MPa;²¹ º¸ Ã÷ ÏÔ ½µ µÍ ÁË £µA£°£¶ ÂÁ ºÏ ½ð º¸ ½Ó½ÓÍ·µÄÁ¦Ñ§ÐÔÄÜ.
(£²)º¸·ìÊǽÓÍ·Á¦Ñ§ÐÔÄܵı¡Èõ²¿Î»,²¹º¸Ê¹º¸·ì¸½½üµÄ¾§Á£´Ö´ó.
£¨ÎÄÕÂÀ´Ô´£º»úе¹¤³Ì²ÄÁÏ > 2017Äê > 8ÆÚ > pp.84£©
¡°ÍƼöÔĶÁ¡±
- ¸Ö²ÄÐÔÄܲâÊԵij£Óüì²â·½·¨
- ·ÖÏí£º»ðÑæÅ纸ºÍµÈÀë×ӶѺ¸ÖƱ¸Ni£¶£°¼° Ni£¶£°£ÇWCÍ¿²ãµÄ×éÖ¯ÓëÐÔÄÜ
- ·ÖÏí£ºÂݸ˸ֱíÃ治ͬ¼¤¹âÈÛ¸²²ãµÄÄÍÄ¥ÓëÄ͸¯Ê´ÐÔÄÜ
- ¸ÖË¿ÉþµÄµÈ¼¶»®·ÖÓëÆÆ»µÀÁ¦ÊÔÑéµÄ×÷ÓÃ
- ·ÖÏí£º ÂÁºÏ½ð»¯Ñ§³É·ÖÈçºÎ·ÖÎö ÈçºÎ½øÐÐÅƺżø¶¨£¿
- ÈçºÎ½øÐнðÊôÀÉìÇ¿¶ÈÓ뺸½ÓÇ¿¶È²âÊÔ£¿
- 304²»Ðâ¸ÖµÄÐÔÄÜÓë³£¼ûÓÃ;½éÉÜ
- ¸Ö²ÄÐÔÄÜ×ۺϲâÊÔ·ÖÎö
- ÂÁ°å¼ì²âµÄÖ÷Òª¼ì²â·½°¸
- ½ðÏàѧ£ºÎ¢¹ÛÐÎò¶Ï¿ÚÌØÕ÷¼ò½é
¡¾ÔðÈα༡¿£º¿·¢¹ÙÍø,¿·¢¹ÙÍø¹ÙÍø°æȨËùÓУº×ªÔØÇë×¢Ã÷³ö´¦