Influence of Secondary Ageing on Fatigue Crack Propagation of the AA7050 Aluminum Alloy-Reference-Cited by-同舟云学术

Influence of Secondary Ageing on Fatigue Crack Propagation of the AA7050 Aluminum Alloy

Published:2014-03 Issue: Volume:891-892 Page:1816-1821
ISSN:1662-8985
Container-title:Advanced Materials Research
language:
Short-container-title:AMR

Author:

Jacumasso Sheila Cristina¹,Ribas Lima Luis Otavio¹,Martins Juliana Paula²,Moreira Carvalho André Luis¹

Affiliation:

1. State University of Ponta Grossa

2. Federal Technological University of Paraná

Abstract

The AA7050 aluminum alloy is widely used due to its low specific combined with high strength and toughness obtained from the heat treatment which involves solution treatment and ageing. It produces the mechanism of precipitation hardening of a thin phase and disperses. In this context, the present study to investigated three ageing treatments, their influence on fatigue crack growth. In order to find a better condition of precipitation of η' phase, which may increase resistance to fatigue crack growth of AA7050 aluminum alloy. The T614-65 condition was chosen as an alternative treatment in relation to T7451 and T6 conditions of current use in the industry. The fatigue crack growth rate results have shown that T614-65 fatigue strength were up to 14% higher than the shown for T7451 temper.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Link

https://www.scientific.net/AMR.891-892.1816.pdf

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