A durability prediction for the magnesium alloy AZ31 based on plastic and total energy

Klemenc, Jernej (avtor), Šeruga, Domen (avtor), Nagode, Marko (avtor)

Magnesium has a good strength-to-weight ratio. As a result, magnesium alloys are gradually becoming an integral part of lightweight designs that are especially important to the automotive and aerospace industries. The magnesium alloy AZ31 is particularly suitable for forming. Furthermore, as its cyclic response is asymmetric, the accumulated energy during loading is a convenient basis for durability predictions of a product that is made of the AZ31 alloy. In this article, we show how the inverse-power law model can be combined with a Weibull’s probability density function to describe the shape of the fatigue-life curves and their scatter. Various load histories were chosen to characterize the response of the AZ31 alloy under different cyclic loadings. Both the plastic and the total strain energy densities were calculated for all the load histories, and then, a suitable dependence in terms of energy fatigue-life curves was determined. The proposed model is appropriate for modeling the low-cycle fatigue life of the AZ31 alloy. With the application of a linear damage-accumulation rule, it is also possible to predict the fatigue life for the non-constant amplitude loading within one decade of accuracy.

• Jezik: Angleški jezik
• Ključne besede: magnesium alloy AZ31, fatigue life, strain-energy density, Weibullʼs probability density function
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2019
• Št. strani: 16 str.
• Številčenje: Vol. 9, iss. 9, art. 973
• PID: 20.500.12556/RUL-109459
• UDK: 669.721.5:620.178.3(045)
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met9090973
• COBISS.SI-ID: 16772379
• Datum objave v RUL: 03.09.2019

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 03.09.2019

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: magnezijeva zlitina AZ31, doba trajanja, gostota energije specifične deformacije, Weibullova gostota porazdelitve verjetnosti