Improving mechanical properties of PVPPA welded joints of 7075 aluminum alloy by PWHT

10Citations
Citations of this article
12Readers
Mendeley users who have this article in their library.

Abstract

In this study, 7075 aluminum alloy with a thickness of 10 mm was successfully welded with no obvious defects by pulsed variable polarity plasma arc (PVPPA) welding. The mechanical properties of PVPPA welded joints have been researched by post weld heat treatment (PWHT). The results indicate that the heat treatment strongly affects the mechanical properties of the welded joints. The tensile strength and the microhardness of the welded joints gradually improved with the increase of the solution temperature. With the increase of the solution time, the tensile strength, and microhardness first dramatically increased and then decreased slightly. The best tensile strength of 537.5 MPa and the microhardness of 143.7 HV were obtained after 490 °C × 80 min + 120 °C × 24 h, and the strength was nearly 91.2% of that of the parent metal, and increased about 35% compared with as-welded. The improvement of strength and microhardness was mainly due to the precipitation of η' phase.

References Powered by Scopus

Friction stir welding and processing

6443Citations
N/AReaders
Get full text

Recent developments in advanced aircraft aluminium alloys

2388Citations
N/AReaders
Get full text

Progress in structural materials for aerospace systems

2268Citations
N/AReaders
Get full text

Cited by Powered by Scopus

A review on high-frequency pulsed arc welding

51Citations
N/AReaders
Get full text

Effect of cutting parameters on machinability of 7075-T651 aluminum alloy in different processing methods

21Citations
N/AReaders
Get full text

Microstructure and mechanical properties of 7075-T6 aluminum alloy plates by welding with weld reinforcement rolling

12Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Li, G., Chen, F., Han, Y., & Liang, Y. (2018). Improving mechanical properties of PVPPA welded joints of 7075 aluminum alloy by PWHT. Materials, 11(3). https://doi.org/10.3390/ma11030379

Readers over time

‘18‘19‘20‘21‘22‘2300.751.52.253

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 5

71%

Professor / Associate Prof. 1

14%

Researcher 1

14%

Readers' Discipline

Tooltip

Engineering 5

71%

Materials Science 2

29%

Save time finding and organizing research with Mendeley

Sign up for free
0