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swrhs2: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2017-05-01 20:36:54
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swrhs2: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2017-05-01 20:36:54
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Microstructures and Mechanical Properties of Vacuum Brazed Ti3Al/TiAl Joints Using Two Ti-based Filler Metals ×÷Õß:Ren, HS (Ren, H. S.)[ 1,2 ] ; Xiong, HP (Xiong, H. P.)[ 2 ] ; Chen, B (Chen, B.)[ 2 ] ; Pang, SJ (Pang, S. J.)[ 1 ] ; Chen, BQ (Chen, B. Q.)[ 2 ] ; Ye, L (Ye, L.)[ 2 ] ²é¿´ ResearcherID ºÍ ORCID JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY ¾í: 32 ÆÚ: 4 Ò³: 372-380 DOI: 10.1016/j.jmst.2015.11.018 ³ö°æÄê: APR 2016 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª Vacuum brazing of Ti3Al-based alloy to TiAl was firstly carried out by Ti-15Cu-15Ni (wt%) filler metal. A continuous Ti3Al band, Ti2Ni and Ti2Cu/Cu3Ti phases formed and the joint showed a shear strength of 53.8-112.4 MPa at room temperature. For the improvement of the joint strength, a new Ti-Zr-Cu-Ni-Fe filler alloy was designed, and its wettability on Ti3Al and TiAl substrate was studied with the sessile drop method. After holding for 20 min at 1010 degrees C the Ti-Zr-Cu-Ni-Fe filler showed a low contact angle of 20 degrees and 21 degrees on Ti3Al and TiAl substrate, respectively. The joint brazed with this novel filler mainly consisted of Ti-rich area, Ti3Al reaction layer and residual filler metal. With the increase of the brazing temperature, the amount of residual filler metal decreased and the Ti3Al reaction layer thickened. The Ti3Al/TiAl joint brazed with Ti-Zr-Cu-Ni-Fe filler exhibited a lower hardness than that brazed with Ti-Cu-Ni filler. The corresponding joints brazed at 950 degrees C for 5 min presented the shear strength of 257.6 +/- 33.6 MPa at room temperature and 304.8 +/- 9.9 MPa at 600 degrees C. Copyright (C) 2016, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved. ¹Ø¼ü´Ê ×÷Õ߹ؼü´Ê:Brazing; Titanium aluminides; Microstructure; Shear strength KeyWords Plus:TITANIUM ALUMINIDES; TI3AL-BASED ALLOY; TI-15CU-15NI FOIL; HIGH-TEMPERATURE; PHASE; INTERMETALLICS; TI-6AL-4V; SUPERALLOY; EVOLUTION; CO ×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Xiong, HP (ͨѶ×÷Õß) ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ Beijing Inst Aeronaut Mat, Welding & Plast Forming Div, Beijing 100095, Peoples R China. µØÖ·: ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 1 ] Beihang Univ, Dept Mat Sci & Engn, Beijing 100191, Peoples R China ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 2 ] Beijing Inst Aeronaut Mat, Welding & Plast Forming Div, Beijing 100095, Peoples R China µç×ÓÓʼþµØÖ·:xionghp69@163.com »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ National Natural Science Foundation of China 51405456 Aeronautical Science Foundation of China 03H21009 99H21013 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ JOURNAL MATER SCI TECHNOL, 72 WENHUA RD, SHENYANG 110015, PEOPLES R CHINA Àà±ð / ·ÖÀà Ñо¿·½Ïò:Materials Science; Metallurgy & Metallurgical Engineering Web of Science Àà±ð:Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering ÎÄÏ×ÐÅÏ¢ ÎÄÏ×ÀàÐÍ:Article ÓïÖÖ:English Èë²ØºÅ: WOS:000373911600012 ISSN: 1005-0302 ÆäËûÐÅÏ¢ IDS ºÅ: DJ0RH Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 38 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 1 |
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