Investigation on the formation mechanism of Ti-bearing non-metallic inclusions in Fe-Al-Ti-O-N alloy by inductive separation method

被引：17

作者：

Li, Minggang ^{[1
]}

Matsuura, Hiroyuki ^{[1
,2
]}

Tsukihashi, Fumitaka ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Frontier Sci, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan

[2] Univ Tokyo, Grad Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

来源：

MATERIALS CHARACTERIZATION | 2018年 / 136卷

关键词：

Inductive separation method; Al plus Ti oxide; Al-Ti oxide; TiN; Fe-Al-Ti-O-N alloy; Homogeneous and heterogeneous; EVOLUTION;

D O I：

10.1016/j.matchar.2017.12.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Formation mechanism of Ti-bearing non-metallic inclusions was studied by inductive separation method, and characterization method was selected according to the type of each inclusion. The Al + Ti oxide was heterogeneous consisting of Al2O3 with Ti rich oxide layer. Compositional and size distribution was characterized by automated SEM observation and EDS analysis. It is formed as the reduction of A1203 by Ti in molten alloy at 1873 K. The Al-Ti oxide was homogenous. It was liquid at 1873 K characterized by EBSD. The Al/Ti molar ratio of oxide was consistent with that in each alloy as analyzed by manual SEM/EDS analysis. Its formation mechanism is proposed to be the reaction among dissolved Ti, Al, and O in molten alloy at 1873 K. TiN precipitated during solidification. The fraction of TiN smaller than 1 mu m was larger in alloy2 than that in alloy1 as analyzed by automated SEM/EDS analysis. It is resulted from larger supersaturation degree in alloy2 during solidification.

引用

页码：358 / 366

页数：9

共 19 条

[1] Effect of Nitrogen on the Formation and Evolution of Non-Metallic Inclusions in Fe-Al-Ti-N Alloy
Choi, Wonjin
Matsuura, Hiroyuki
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ISIJ INTERNATIONAL, 2013, 53 (11) : 2007 - 2012
[2] Effect of Non-metallic Inclusions in Fe-Al-Ti-O-N-S Alloy on Grain Size
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[3] Effect of Non-metallic Inclusions in Fe-Al-Ti-O-N-S Alloy on Grain Size
Choi, Wonjin
Matsuura, Hiroyuki
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METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2016, 47 (03): : 1851 - 1857
[4] Formation and Evolution of Non-metallic Inclusions in Ti-Bearing Al-Killed Steel During Secondary Refining Process
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Metallurgical and Materials Transactions B, 2020, 51 : 173 - 186
[5] Formation and Evolution of Non-metallic Inclusions in Ti-Bearing Al-Killed Steel During Secondary Refining Process
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[6] Evolution of Non-metallic Inclusions in Solid Fe-Al-Ti-N Alloy During Heating
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8TH INTERNATIONAL SYMPOSIUM ON HIGH-TEMPERATURE METALLURGICAL PROCESSING, 2017, : 189 - 194
[7] Fundamental Research on Evolution of TiN in Fe-Al-Ti-O-N Alloy During Isothermal Holding
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METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2022, 53 (04): : 2458 - 2470
[8] Formation Mechanism, Evolution and Modification of Non-Metallic Inclusions in Al-killed, Ti-Alloyed Steel Melt: A Review
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TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2023, 76 (10) : 2587 - 2600
[9] Formation Mechanism, Evolution and Modification of Non-Metallic Inclusions in Al-killed, Ti-Alloyed Steel Melt: A Review
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Transactions of the Indian Institute of Metals, 2023, 76 : 2587 - 2600
[10] Evaluation of Agglomeration Mechanisms of Non-metallic Inclusions and Cluster Characteristics Produced by Ti/Al Complex Deoxidation in Fe-10mass% Ni Alloy
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