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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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搅拌摩擦焊接Al-Li合金接头的微观组织及力学性能
, PP. 504-508
Keywords: 搅拌摩擦焊,锥形带螺纹搅拌头
Abstract:
采用锥形带螺纹搅拌头搅拌摩擦焊接5mm厚的Al-Li合金轧制板材,并对接头组织、力学性能及断裂特性进行了研究.结果表明,焊核区组织发生动态再结晶,形成细小的等轴晶晶粒,在等轴晶的晶界处析出大量的偏析相.热影响区组织发生回复和粗化反应,形成粗大的棒状回复晶粒;热机影响区组织发生弯曲变形,但整体上仍保留带状组织形貌,前进侧热机影响区组织变形程度高于后退侧,该区同时还发生回复反应,且后退侧热机影响区内的回复晶粒数量多于前进侧.拉伸实验结果表明,焊接速度v=40mm/min时,接头强度达到最大值,为345MPa；v=60mm/min时,接头延伸率达到最大值,为9.6%.硬度测试结果表明,搅拌摩擦焊接头发生软化,前进侧的软化区宽度大于后退侧.断口形貌分析表明,接头断裂模式为韧-脆混合型断裂.
| [1] | Hassan Kh A A, Norman A F, Price D A, Prangnell P B. Acta Mater, 2003; 51:1923
|
| [2] | Guerra M, Schmidt C, McClure J C, Murr L E, Nunes A C. Mater Charact, 2003; 49(1) : 95
|
| [3] | Prado R A, Murr L E, Shindo D J, Soto K F. Scr Mater, 2001; 45:75
|
| [4] | Sutton M A, Yang B, Reynolds A P, Taylor R. Mater Sci Eng, 2002; A323:160
|
| [5] | Shindo D J, Rivera A R, Murr L E. J Mater Sci, 2002; 37:4999
|
| [6] | Jata S V. Sankaran K K, Ruschau J J, Metall Mater Trans, 2000; 31A: 2181
|
| [7] | Webster P J, Oosterkamp L D, Browne P A, Hughes D J, Kang W P, Withers P J, Vaughan G B M. J Strain Anal, 2001; 36(1) : 61
|
| [8] | Mahoney M W, Rhodes C G, Flintoff J G, Spurling R A, Bingle W H. Metall Mater Trans, 1998: 29A: 1955
|
| [9] | Oosterkamp L D, Webster P J, Browne P A, Vaughan G B M, Withers P J. Mater Sci Forum, 2000; 347-349:678
|
| [10] | Khandkar Z H. Khan J A. J Mater Proc Manufact Sci, 2001; 10(10) : 91
|
| [11] | Frigaard Φ, Grong Φ, Midling O T. Metall Mater Trans, 2001; 32A: 1189
|
| [12] | Reynolds A P, Lockwood W D, Seidel T U. Mater Sci Form, 2000; 331-337:1719
|
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