Precipitate evolution in underaged Al–Mg–Si alloy during thermal cycling between 25°C and 65°C

Uan, Jun-Yen; Cho, Chi-Yuan; Chen, Zhiming; Lin, Jia-Chun

doi:10.1016/j.msea.2005.11.049

Cited by 16 publications

(4 citation statements)

References 27 publications

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“…The presence and evolution of the voids may cause a progressive damage of the material due to the loss of load-carrying capability. On the experimental side, cavities have been reported to continuous nucleate during a certain history of thermal cycling [5]. Experimental and theoretical investigated indicated that a reservedly plastic zone may be formed in certain thermal cycling.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Void Nucleation around Inclusions under Combined Mechanical and Thermal Cycling Conditions

Cheng

Shi

et al. 2013

MSF

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In this paper a numerical investigation on the void nucleation behaviors under combined mechanical and thermal cycling conditions have been performed. A finite element unit cell model is conduct to calculate the local stress-strain field and describe the process of void nucleation from inclusion. Numerical results show that the thermal mismatch stress between the particles and matrix can assist the external load to cause interface debonding. Under certain mechanical and thermal cycling conditions, complicated stress and strain hystereses developed in the matrix. Both the plastic strain and plastic energy density of the interface will be accumulated during every thermal cycle. The plastic energy accumulation of the interface will first reach the debonding value and failure occurs. Based on the numerical calculation, a new energy based failure criteria is proposed to characterize the behaviors of void nucleation under combine mechanical and thermal cycling conditions.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Void Nucleation around Inclusions under Combined Mechanical and Thermal Cycling Conditions

Cheng

Shi

et al. 2013

MSF

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“…One of the processes which has the influence on the increase of mechanical characteristics is a so called thermal cycling treatment [6][7][8][9][10] consisting of alternating annealing and cooling of the supersaturated solid solution up to the recrystallization temperature of copper alloys. Thermal cycling is a temperature modulation process developed to improve the performance, strength and longevity of a variety of materials.…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal cycling treatment on the anneal hardening effect of Cu–10Zn Alloy

Nestorovic

Marković

2010

Journal of Alloys and Compounds

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“…Die Ausscheidungssequenzen sind in [5] sehr aus-führlich beschrieben. Ein gängiges Verfahren das Ausscheidungsverhalten von Aluminiumlegierungen zu untersuchen stellt hierbei die zerstörende und zeitaufwändige Untersuchung mittels Transmissions-elektronenmikroskopie (TEM) dar [3,4,6,9]. Desweiteren wird die Differential Scanning Calorimetry (DSC) [7,8,11] zur Charakterisierung von Ausscheidungen angewendet.…”

Section: Introductionunclassified

Non‐destructive testing methods for determining the age‐hardening condition of aluminium alloys using the alloy EN AW‐6082 as an example

Grittner¹,

Bormann²,

Springer³

et al. 2010

Materialwissenschaft Werkst

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Warmauslagerungsfähige Aluminiumlegierungen bieten den Vorteil, dass sie in ihrer Festigkeit in einem sehr weiten Bereich gezielt eingestellt werden können. Dies setzt voraus, dass die Prozesstemperaturen und -zeiten der Warmauslagerung sehr genau eingehalten werden. Die hier vorgestellten Arbeiten zielen auf die Qualifizierung zerstörungsfreier Messmethoden ab, mit denen der Warmauslagerungszustand Prozessbegleitend sehr schnell ermittelt werden kann. Somit können bereits während der Durchführung der Warmauslagerung Fehler im Prozess detektiert werden und im Sinne der Qualitätssicherung eine Verbesserung der Kontrollmechanismen erzielt werden. Die Untersuchungen wurden mittels Leitfähigkeits-, Wirbelstrom-und Resonanz-Frequenz-Messungen durchgeführt. Insbesondere die Ergebnisse der Wirbelstrom-und Resonanz-FrequenzMessungen lassen das hohe Potenzial zerstörungsfrei arbeitender Verfahren zur online Kontrolle des Warmauslagerungszustandes erkennen.Schlüsselwörter: Strangpressen / Warmauslagern / Aluminium / zerstörungsfreie Prüfung / Heat treatable aluminium alloys offer the advantage that their strength can be specifically adjusted within a very broad range. This presupposes that the age-hardening's process temperatures and durations are very precisely maintained. The work presented here aims to qualify non-destructive testing methods with which the age-hardening condition can be very rapidly determined during the actual process.Thus, process defects can be readily detected during the age-hardening procedure and, within the scope of a quality assurance, an improvement of the control mechanisms can be obtained. The investigations were carried out by means of conductivity, eddycurrent and resonance-frequency measurements. The results of the eddy-current and resonancefrequency measurements in particular allow the enormous potential of non-destructive procedures to be realised for the online control of the age-hardening condition.

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Precipitate evolution in underaged Al–Mg–Si alloy during thermal cycling between 25°C and 65°C

Cited by 16 publications

References 27 publications

Numerical Investigation on Void Nucleation around Inclusions under Combined Mechanical and Thermal Cycling Conditions

Numerical Investigation on Void Nucleation around Inclusions under Combined Mechanical and Thermal Cycling Conditions

Influence of thermal cycling treatment on the anneal hardening effect of Cu–10Zn Alloy

Non‐destructive testing methods for determining the age‐hardening condition of aluminium alloys using the alloy EN AW‐6082 as an example

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