Influence of time on residual stresses in friction stir welds in agehardenable 7xxx aluminium alloys
Source abstract
Abstract
Friction stir welding (FSW) can be used to weld 7xxx series wrought aluminium alloys. As these materials are age-hardenable, their properties can change with time. This work used the neutron diffraction technique to measure the residual stresses around a FSW in a 7xxx alloy and to determine how these residual stresses changed with time. It was found that the residual stresses associated with the weld nugget decreased, while those associated with the heat-affected zone increased with time. This is in contrast to strength and hardness values that increased in all regions of the weld with time.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Aluminum Alloy Microstructure Properties · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
1. Thomas WM, Nicholas ED, Needham JC, Murch MG, Temple-Smith P, Dawes CJ. Friction Stir Butt Welding, International Patent Application No. PCT/GB92/02203, GB Patent Application No. 9125978.8 (1991), US Patent No. 5,460,317.1995.
2. Midling OT, Morley E, Kluken AO. Joining of aluminium constructions by friction stir welding, new and alternative materials for the transportation industries. In: Proceedings of the 27th international symposium on automotive technology and automation, Aachen, Germany, October 31–November 4; 1994.
3. Friction stir process welds aluminium alloys
4. Leonard AJ. Microstructure and ageing behaviour of FSWs in aluminium alloys 2014A-T651 and 7075-T651. In: Second international symposium on friction stir welding, Gothenburg, Sweden, June 26–28; 2000.
5. Linton VM, Renc S, Brown IH. Investigation of properties of friction stir welds in agehardenable 7xxx aluminium alloys. In: Seventh international conference on trends in welding research, Pine Mountain, Georgia, USA. May 16–20; 2005.
6. The variation of the unstrained lattice parameter in an AA7010 friction stir weld10.1016/j.actamat.2007.01.024 ↗
7. Microstructure, mechanical properties and residual stresses as a function of welding speed in aluminium AA5083 friction stir welds10.1016/S1359-6454(03)00319-7 ↗
8. Synchrotron diffraction measurement of residual stresses in friction-stir-welded 5383-H321 aluminium butt joints and their modification by fatigue cycling10.1111/j.1460-2695.2004.00736.x ↗
9. Synchrotron X-ray residual strain scanning of a friction stir weld10.1243/0309324011512612 ↗
10. A study of residual stresses and microstructure in 2024-T3 aluminium friction stir butt welds10.1115/1.1429639 ↗
11. Residual stresses in friction-stir-welded Al sheets10.1007/s003390201830 ↗
12. The role of residual stress and heat-affected zone properties on fatigue crack propagation in friction-stir-welded 2024-T351 aluminium joints10.1016/S0142-1123(02)00038-5 ↗
13. An analysis of through-thickness residual stresses in aluminium FSW butt joints10.1016/j.ijmachtools.2005.07.013 ↗
14. Residual stress measurements in Australia: present and future10.4028/www.scientific.net/MSF.490-491.218 ↗
15. Residual stress in weldments10.1080/10238160108200153 ↗
16. Microstructural investigation of friction-stir-welded 6050-T651 aluminium10.1016/S1359-6454(02)00449-4 ↗
17. Effect of friction stir welding and dynamic properties of AA2024-T3 and AA7075-T7351
18. Properties of friction-stir-welded 7075 T651 aluminium10.1007/s11661-998-0021-5 ↗