Effect of Ca addition on selective oxidation of Al3Mg2 phase in Al-5 mass% Mg alloy

Kim, Bong Hwan; Ha, Seong-Ho; Yoon, Young Ok; Lim, Hyun-Kyu; Kim, Shae K.; Kim, Do Hyang

doi:10.1016/j.matlet.2018.05.132

Cited by 24 publications

(14 citation statements)

References 12 publications

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“…Magnesium alloy was widely used in mechanical and electronic industries where weight plays an important role. However, Mg is a chemically active metal and easily reacts with oxygen, especially at high temperatures [1]. Loose and unprotected MgO film is apt to form on the surface of magnesium alloy, which seriously restricts its application in high-temperature environments such as automobile engine boxes, aircraft parts, etc [2].…”

Section: Introductionmentioning

confidence: 99%

Study on the high-temperature oxidation behavior of Mg-Ce binary alloys

Yu,

Yang,

Han

et al. 2024

J. Phys.: Conf. Ser.

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The aim of current research is to study the oxidation resistance of binary magnesium alloys containing Ce at high temperatures to provide a theoretical foundation for the application of magnesium alloys which are applied at high-temperature conditions. The oxidation properties of binary magnesium alloys containing different Ce content at high temperatures have been studied. The thermogravimetric results show that a small amount of Ce (0.2, 0.4 wt. %) addition can improve the oxidation resistance of magnesium alloys at high temperatures. Continuous-distributed Mg12Ce compounds in the two test alloys with high Ce content (≥0.7 wt. %) provided channels to the internal oxidation and thus deteriorated the oxidation resistance. MgO and CeO2 were the primary components which are detected in the oxide films. CeO2 was mainly detected at the inner layer of the film.

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Section: Introductionmentioning

confidence: 99%

Study on the high-temperature oxidation behavior of Mg-Ce binary alloys

Yu,

Yang,

Han

et al. 2024

J. Phys.: Conf. Ser.

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“…Table 1 showed the chemical compositions of the 5083M alloy with the commercial 5083 alloy. The slab of 5083M alloy was cast using high-purity aluminum ingot, Mg master alloy including Al 2 Ca, which was used for inhibiting Mg oxidation for the quality of molten metal, and Al-Ti mother alloy with induction furnace in the laboratory [18,19]. The slab was homogenized at 430 • C for 24 h to eliminate segregation.…”

Section: Introductionmentioning

confidence: 99%

Stretch Forming Behavior and Constitutive Equation of a Modified 5083 Alloy with High Mg Content at Elevated Temperatures

Yang

Lee

Choi

et al. 2021

Metals

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For the purpose of applying a modified 5083 alloy (New 5083M alloy) with high Mg content in various automotive sheet parts, the stretch forming behavior of the 5083M alloy was studied in tensile mode at a wide range of processing conditions. The tensile tests were conducted by using a tensile test machine under the temperature ranges of 100–400 °C and the strain rate ranges of 0.001–1 s−1. The test results showed that the 5083M alloy has superior mechanical properties to that of the commercial 5083 alloy at elevated temperatures. The microstructure before and after the stretch forming was analyzed using optical microscope (OM) equipped with a polarizing filter and electron backscattered diffraction (EBSD) unit. Deformed microstructure was observed under low temperature conditions and dynamic recrystallized microstructure under high temperature conditions. However, regardless of microstructure evolution, developed deformation textures were distributed in orientation distribution functions (ODF) images. In addition, at high temperature and low strain rate condition, complex shaped cavities which were detrimental to mechanical properties appeared at the grain boundary and grain triple junction. Based on the test results data, a constitutive equation predicting the deformation behavior of the 5083M alloy was derived. The calculated curves by the constitutive equation were compared with the measured curves by experiment and agreed well.

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“…The strategy uses an Mg + Al 2 Ca master alloy instead of pure Mg during casting. The Mg + Al 2 Ca master alloy improves the oxidation resistance of Al-Mg alloys by forming a protective CaO/MgO mixed layer on the surface [8,9] Previous studies have shown that anodic β-phase (β-Mg 2 Al 3 ) precipitation along grain boundaries is an important factor affecting the intergranular corrosion (IGC) susceptibility of Al-Mg alloy [6][7][8]. The Mg segregation leads to anodic β-phase formation at 50-200 • C. The β-phase precipitation is referred to as sensitization [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Intergranular Corrosion and Microstructural Evolution in a Newly Designed Al-6Mg Alloy

et al. 2021

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In this work, the microstructure and corrosion behavior of a novel Al-6Mg alloy were investigated. The alloy was prepared by casting from pure Al and Mg+Al2Ca master alloy. The ingots were homogenized at 420 °C for 8 h, hot-extruded and cold-rolled with 20% reduction (CR20 alloy) and 50% reduction (CR50 alloy). The CR50 alloy exhibited a higher value of intergranular misorientation due to a higher cold rolling reduction ratio. The average grain sizes were 19 ± 7 μm and 17 ± 9 μm for the CR20 and CR50 alloys, respectively. An intergranular corrosion (IGC) behavior was investigated after sensitization by a nitric acid mass-loss test (ASTM G67). The mass losses of both the CR20 and CR50 alloys were similar at early periods of sensitization, however, the CR20 alloy became more susceptible to IGC as the sensitization time increased. Grain size and β phase precipitation were two critical factors influencing the IGC behavior of this alloy system.

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Effect of Ca addition on selective oxidation of Al3Mg2 phase in Al-5 mass% Mg alloy

Cited by 24 publications

References 12 publications

Study on the high-temperature oxidation behavior of Mg-Ce binary alloys

Study on the high-temperature oxidation behavior of Mg-Ce binary alloys

Stretch Forming Behavior and Constitutive Equation of a Modified 5083 Alloy with High Mg Content at Elevated Temperatures

Intergranular Corrosion and Microstructural Evolution in a Newly Designed Al-6Mg Alloy

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Effect of Ca addition on selective oxidation of Al3Mg2 phase in Al-5 mass% Mg alloy

Cited by 24 publications

References 12 publications

Study on the high-temperature oxidation behavior of Mg-Ce binary alloys

Study on the high-temperature oxidation behavior of Mg-Ce binary alloys

Stretch Forming Behavior and Constitutive Equation of a Modified 5083 Alloy with High Mg Content at Elevated Temperatures

Intergranular Corrosion and Microstructural Evolution in a Newly Designed Al-6Mg Alloy

Contact Info

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Effect of Ca addition on selective oxidation of Al3Mg2 phase in Al-5 mass% Mg alloy