Stress corrosion cracking of an Al-Li alloy

Wang, Z. F.; Zhang, Zhu; Zhang, Y.; Ke, Wei

doi:10.1007/bf03024541

Cited by 18 publications

(1 citation statement)

References 5 publications

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“…Compared with the conventional steelmaking process, the hot metal is dephosphorized with the slag at the relatively low basicity of 1.3–2.2 and at the low temperature of approximately 1350°C in the new double slag converter steelmaking process [36]. Wang et al [38] indicated that the basicity of the dephosphorization slag should be controlled within the range of 1.3–1.5, and the temperature after dephosphorization was about 1350°C. For the dephosphorization at low basicity and low temperature, few kinetic studies have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Kinetic model of dephosphorization in the new double slag converter steelmaking process

Zhang

Yang

et al. 2021

Ironmaking & Steelmaking

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The kinetic investigation of the dephosphorization in the new double slag converter steelmaking process was carried out based on the coupled reactions model combining with a heat balance temperature model for the 220-ton industrial experiment. The calculated results of [%C], [%Si], [% P] in the hot metal, and the slag compositions are in good agreement with the experimental results. When the heat balance temperature model is applied, the P prediction results are better rather than those predicted by using the fixed temperatures. The calculated phosphorus distribution ratio increases with the refining time, while the phosphate capacity shows a downward trend due to the decrease in slag basicity and the increase in temperature. The ratecontrolling step of the dephosphorization is determined to be the mixed control of the mass transfer of P in the hot metal and P 2 O 5 in the slag. As the initial Si concentration is increased, the interfacial oxygen activity required for starting the dephosphorization is increased, leading to the delay of the dephosphorization start time.

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Section: Introductionmentioning

confidence: 99%

Kinetic model of dephosphorization in the new double slag converter steelmaking process

Zhang

Yang

et al. 2021

Ironmaking & Steelmaking

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Correlation of stress corrosion cracking behaviour with electrical conductivity and open circuit potential in Al‐Li‐Cu‐Mg‐Zr alloys

Ghosh¹,

Das

Chatterjee

2007

Materials & Corrosion

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Studies of stress corrosion cracking (SCC) behaviour by slow strain rate test (SSRT), potentiodynamic electrochemical polarization and measurement of electrical resistivity were carried out on 8090 and 1441 Al-Li-Cu-Mg-Zr alloys in their peak aged T8, over aged T7 and retrogressed and reaged (RRA) T77 tempers. It has been found that the SCC resistance is maximum in the T7 temper, least in the T8 temper and in the RRAT77 tempers it lies in between to that of the T8 and T7 tempers, indicating that RRA heat treatment given to the T8 temper of both alloys caused an improvement of SCC resistance. Further, studies on the electrical conductivity measurements and electrochemical polarization of all tempers of both alloys showed that T7 temper has maximum electrical conductivity and most negative (anodic) open circuit potential (OCP), T8 has the minimum and the least respectively, whereas, in the T77 tempers these values lie in between to those of the T8 and T7 tempers. Therefore, a definite pattern of variation of these results with RRA treatment draws an attention to correlate SCC behaviour, electrical conductivity and OCP values which are explained on the basis of microstructural features revealed by TEM and XRD studies.

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Determination of hydrogen diffusivity in Al-Li-Cu-Mg alloys

Thakur

Balasubramaniam

1996

J Mater Sci Lett

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Stress corrosion cracking of an Al-Li alloy

Cited by 18 publications

References 5 publications

Kinetic model of dephosphorization in the new double slag converter steelmaking process

Kinetic model of dephosphorization in the new double slag converter steelmaking process

Correlation of stress corrosion cracking behaviour with electrical conductivity and open circuit potential in Al‐Li‐Cu‐Mg‐Zr alloys

Determination of hydrogen diffusivity in Al-Li-Cu-Mg alloys

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