Variation in the Chemical Driving Force for Intragranular Nucleation in the Multi-pass Weld Metal of Ti-Containing High-Strength Low-Alloy Steel
- Title
- Variation in the Chemical Driving Force for Intragranular Nucleation in the Multi-pass Weld Metal of Ti-Containing High-Strength Low-Alloy Steel
- Author
- 박주현
- Keywords
- ACICULAR FERRITE NUCLEATION; MN-DEPLETED ZONE; MECHANICAL-PROPERTIES; TRANSFORMATION BEHAVIOR; NONMETALLIC INCLUSION; CARBON STEELS; MICROSTRUCTURE; DEPOSITS; BAINITE; SIZE
- Issue Date
- 2015-08
- Publisher
- SPRINGER
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v. 46A, No. 8, Page. 3581-3591
- Abstract
- The variation of the Mn-depleted zone (MDZ) around the inclusion during multi-pass welding of Ti-containing high-strength low-alloy (HSLA) steel was investigated by taking the changes in the impact toughness and microstructure into account. As-deposited weld metal specimens were prepared by single-pass, bead-in-groove welding, and reheated weld metal specimens were obtained by a thermal simulation technique. Two types of chemical compositions were prepared, mainly by controlling the Ti content in order to form two types of phases at inclusion/matrix interface: spinel and ilmenite. When the reheating thermal cycle is applied to the as-deposited weld metal, the MDZ depth varied depending on the inclusion surface phase; this could be explained by the competition of the homogenization effect and the dissolution effect, which occurred near the inclusion/matrix interface. In order to enhance the chemical driving force for intragranular nucleation in both as-deposited weld metal and reheated weld metal, the formation of ilmenite phase is recommended. (C) The Minerals, Metals & Materials Society and ASM International 2015
- URI
- https://link.springer.com/article/10.1007/s11661-015-2958-5http://hdl.handle.net/20.500.11754/38037
- ISSN
- 1073-5623; 1543-1940
- DOI
- 10.1007/s11661-015-2958-5
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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