A feasibility research on friction stir welding of a new-typed lap-butt joint of dissimilar Al alloys

被引：23

作者：

Li, Bo ^{[1
]}

Shen, Yifu ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China

来源：

MATERIALS & DESIGN | 2012年 / 34卷

基金：

中国国家自然科学基金;

关键词：

Non-ferrous metals and alloys; Welding; Mechanical; MATERIAL FLOW; MECHANICAL-PROPERTIES; PROCESS PARAMETERS; ONION RINGS; MICROSTRUCTURE; MODEL; TOOL;

D O I：

10.1016/j.matdes.2011.05.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new-typed joint configuration, called lap-butt joint of dissimilar aluminum alloys, consisted of a single AA6063 plate of 4 mm thick and two overlap AA5052 plates of 2 mm thick. As needed as some engineering applications, the lap-butt joint was successfully welded through the friction stir welding technique using a designed tool of W9Mo3Cr4 V with some geometric improvements. The optimum work conditions and a process map were obtained after the welding process parameter optimization experiments. The process window was built aiming to choose the suitable processing conditions to pursue the high-quality lap-butt joints. The effects of welding parameters, especially the value of pin off-set, on weld-formation, microstructures and mechanical tensile properties of the lap-butt joints of dissimilar aluminums were investigated. The parameter of pin off-set played a very important role and exerted stronger influence upon the joint quality. Three typical micro flow-patterns of plasticized materials were found in the weld-zones: circumfluence, laminar-flow and turbulent-flow. Some weld-defects and the morphologies of 'onion rings' were detected. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：725 / 731

页数：7

共 33 条

[1] On the FSW of AA2024-T4 and AA7075-T6 T-joints: an industrial case study
Acerra, F.
Buffa, G.
Fratini, Livan
Troiano, G.
[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2010, 48 (9-12) : 1149 - 1157
[2] Mechanical properties evolution during post-welding-heat treatments of double-lap Friction Stir Welded joints
Cerri, E.
Leo, P.
[J]. MATERIALS & DESIGN, 2011, 32 (06) : 3465 - 3475
[3] Warm and room temperature deformation of friction stir welded thin aluminium sheets
Cerri, E.
Leo, P.
[J]. MATERIALS & DESIGN, 2010, 31 (03) : 1392 - 1402
[4] Effect of tool geometry on microstructure and mechanical properties of friction stir lap welded magnesium alloy and steel
Chen, Y. C.
Nakata, K.
[J]. MATERIALS & DESIGN, 2009, 30 (09) : 3913 - 3919
[5] On the forming mechanism of banded structures in aluminium alloy friction stir welds
Chen, Z. W.
Cui, S.
[J]. SCRIPTA MATERIALIA, 2008, 58 (05) : 417 - 420
[6] Material flow and mechanical behaviour of dissimilar AA2024-T3 and AA7075-T6 aluminium alloys friction stir welds
da Silva, A. A. M.
Arruti, E.
Janeiro, G.
Aldanondo, E.
Alvarez, P.
Echeverria, A.
[J]. MATERIALS & DESIGN, 2011, 32 (04) : 2021 - 2027
[7] On the material flow in FSW of T-joints: Influence of geometrical and tecnological parameters
Fratini, L.
Buffa, G.
Micari, F.
Shivpuri, R.
[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2009, 44 (5-6) : 570 - 578
[8] Influence of material characteristics on plastomechanics of the FSW process for T-joints
Fratini, L.
Buffa, G.
Shivpuri, R.
[J]. MATERIALS & DESIGN, 2009, 30 (07) : 2435 - 2445
[9] A process model for friction stir welding of age hardening aluminum alloys
Frigaard, O
Grong, O
Midling, OT
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (05): : 1189 - 1200
[10] Flow patterns during friction stir welding
Guerra, A
Schmidt, C
McClure, JC
Murr, LE
Nunes, AC
[J]. MATERIALS CHARACTERIZATION, 2002, 49 (02) : 95 - 101

← 1 2 3 4 →