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Impact Toughness and Softening of the Heat Affected Zone of High Heat Input Welded 390 MPa Yield Strength Grade TMCP Steel
항복강도 390 MPa급 가공열처리강 대입열용접 열영향부 충격인성 및 연화현상
Kook-Soo Bang, Young-Ho Ahn, Hong-Chul Jeong
방국수, 안영호, 정홍철
Korean J. Met. Mater. 2018;56(11):796-804.   Published online 2018 Nov 5
DOI: https://doi.org/10.3365/KJMM.2018.56.11.796

Abstract
The Charpy impact toughness of the heat affected zone (HAZ) of electro gas welded 390 MPa yield strength grade steel, manufactured by a thermo mechanically controlled process, was investigated. The effects of added Nb on the toughness of the steel and the factors influencing scatter in toughness are discussed in..... More

                        
Hydrogen Sorption of Pure Mg and Niobium (V) Fluoride-Added Mg Alloys Prepared by Planetary Ball Milling in Hydrogen
Hye Ryoung Park, Young Jun Kwak, Seong Ho Lee, Myoung Youp Song
Korean J. Met. Mater. 2016;54(12):916-924.   Published online 2016 Dec 5
DOI: https://doi.org/10.3365/KJMM.2016.54.12.916

Abstract
In this work, niobium (V) fluoride was selected as an additive to heighten the hydrogen sorption rates of Mg. Specimens of pure Mg, 5 wt% niobium fluoride-added Mg, and 10 wt% niobium fluoride-added Mg were prepared by planetary ball milling in hydrogen. The hydrogen sorption properties of the specimens were..... More

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