TY - JOUR
T1 - Solubilities of Nickel, Iron, and Chromium in Liquid Magnesium in the Presence of Austenitic Stainless Steel
AU - Taninouchi, Yu ki
AU - Okabe, Toru H.
N1 - Funding Information:
The authors are grateful to Dr. Katsuhiro Nose, University of Tokyo (currently with TANIOBIS GmbH); Messrs. Kazuhiro Taki, Masanori Yamaguchi, Yosuke Inoue, and Meiji Watanabe, Toho Titanium Co., Ltd.; and Professor Hiroyuki Matsuura, University of Tokyo, for valuable comments and suggestions. The authors also thank Messrs. Eiji Shirane and Yoji Iwai, Toho Titanium Co., Ltd., for their assistance in carrying out the composition analysis with ICP-AES. This article is based on results obtained from a project, JPNP14014, commissioned by the New Energy and Industrial Technology Development Organization (NEDO). This research was partly supported by the Japan Society for the Promotion of Science (JSPS) through a Grant-in-Aid for Scientific Research (S) (KAKENHI Grant No. 19H05623).
Funding Information:
The authors are grateful to Dr. Katsuhiro Nose, University of Tokyo (currently with TANIOBIS GmbH); Messrs. Kazuhiro Taki, Masanori Yamaguchi, Yosuke Inoue, and Meiji Watanabe, Toho Titanium Co., Ltd.; and Professor Hiroyuki Matsuura, University of Tokyo, for valuable comments and suggestions. The authors also thank Messrs. Eiji Shirane and Yoji Iwai, Toho Titanium Co., Ltd., for their assistance in carrying out the composition analysis with ICP-AES. This article is based on results obtained from a project, JPNP14014, commissioned by the New Energy and Industrial Technology Development Organization (NEDO). This research was partly supported by the Japan Society for the Promotion of Science (JSPS) through a Grant-in-Aid for Scientific Research (S) (KAKENHI Grant No. 19H05623).
Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society and ASM International.
PY - 2021/4
Y1 - 2021/4
N2 - Steel containers and instruments are used to hold and transport Mg melts. Thus, quantitative analysis of the dissolution of metallic elements from the steel materials into the liquid Mg is important for controlling the impurities in processes such as Mg alloy production and Ti smelting. When austenitic stainless steels containing Cr and Ni come in contact with a Mg or Mg alloy melt, a large amount of Ni and limited amounts of Fe and Cr dissolve into the melt. In this study, the composition of a Mg-Ni-based melt in equilibrium with SUS316 was investigated to determine the maximum amounts of impurities dissolved from SUS316 into the liquid Mg. Mg-Ni melts of different compositions were held in a closed crucible of SUS316 at 1073 K (800 °C) to 1273 K (1000 °C), and the compositions of the inner wall of the crucible and the Mg-Ni alloy were evaluated after quenching. Subsequently, the relationships between the solubility limit of element i (i: Ni, Fe, and Cr) in liquid Mg with the coexistence of SUS316, Csol,i∗ (mass pct), and the temperature, T (K), were determined: log(Csol,Ni∗)=-1.40×103/T+2.57(±0.12),log(Csol,Fe∗)=-5.20×103/T+3.93(±0.16),andlog(Csol,Cr∗)=-5.96×103/T+3.80(±0.05). These solubility limits were compared with those estimated based on the available thermodynamic data for the SUS316 and Mg-i binary systems. The validity of the obtained data and the reliability of the previously reported thermodynamic data were also discussed.
AB - Steel containers and instruments are used to hold and transport Mg melts. Thus, quantitative analysis of the dissolution of metallic elements from the steel materials into the liquid Mg is important for controlling the impurities in processes such as Mg alloy production and Ti smelting. When austenitic stainless steels containing Cr and Ni come in contact with a Mg or Mg alloy melt, a large amount of Ni and limited amounts of Fe and Cr dissolve into the melt. In this study, the composition of a Mg-Ni-based melt in equilibrium with SUS316 was investigated to determine the maximum amounts of impurities dissolved from SUS316 into the liquid Mg. Mg-Ni melts of different compositions were held in a closed crucible of SUS316 at 1073 K (800 °C) to 1273 K (1000 °C), and the compositions of the inner wall of the crucible and the Mg-Ni alloy were evaluated after quenching. Subsequently, the relationships between the solubility limit of element i (i: Ni, Fe, and Cr) in liquid Mg with the coexistence of SUS316, Csol,i∗ (mass pct), and the temperature, T (K), were determined: log(Csol,Ni∗)=-1.40×103/T+2.57(±0.12),log(Csol,Fe∗)=-5.20×103/T+3.93(±0.16),andlog(Csol,Cr∗)=-5.96×103/T+3.80(±0.05). These solubility limits were compared with those estimated based on the available thermodynamic data for the SUS316 and Mg-i binary systems. The validity of the obtained data and the reliability of the previously reported thermodynamic data were also discussed.
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U2 - 10.1007/s11663-020-02025-1
DO - 10.1007/s11663-020-02025-1
M3 - Article
AN - SCOPUS:85100071080
VL - 52
SP - 611
EP - 624
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
SN - 1073-5615
IS - 2
ER -