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A Study on Advanced Small Punch Test for Evaluation of Fracture Strength in Heat Resisting Stell Weldment  

이동환
이송인
권일현
유효선
Publication Information
Journal of Welding and Joining / v.20, no.6, 2002 , pp. 99-99 More about this Journal
Abstract
In order to evaluate the proper fracture strength of microstructures in a steel weldment, smaller size loading ball than used for a conventional small punch(CSP) testing is required due to regional limitation on constitutive structures. In this study, the minimized loading ball(φ 1.5mm) and bore diameter of lower die(φ 3mm) were designed for an advanced small punch(ASP) test. The results obtained from the ASP test were compared with those from a CSP testing for a X20CrMoV121 steel weldment. It was found that the ASP test clearly showed the microstructural dependance on fracture strength and ductile-brittle transition behavior of the weldment. In the ASP test, especially, the cracks tend to initiate for various directions within hemispherical indentation region of an objective structure in SP test. This indicates that the evaluation of more proper fracture strength for F.L+CGHAZ, FGHAZ and ICHAZ can be performed by means of the ASP test in a steel weldment.
Keywords
Advanced small punch(ASP) test, Heat resisting steel weldment, F.L, CGHAZ, FGHAZ, ICHAZ, Fracture strength, DBTT, X20CrMoV121 steel;
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  • Reference
1 A Study on Fracture Strength Evaluation of Steel Welded Joint by Small Punch Test I. /
[ D.Y. Lyu;S.H. Chung;J.K. Lim;H.D. Jung;K. Tamakawa;H. Takahashi ] / Journal of KWS
2 Deformation and Fracture Mechanics of Engineering Materials /
[ R.W. Hertzberg ] /
3 Development of Small Punch Tests for Ductile-Brittle Transition Temperature Measurement of Temper Embrittled Ni-Cr Steels /
[ J.M. Baik;J. Kameda;O. Buck ] / ASTM STP 888
4 Small Punch Test Method /
[] / Japan Atomic Energy Research Institute
5 Damage Mechanisms and Life Assessment of High Temperature Components /
[ R. Viswanathan ] / ASM International Metals Park
6 International Conference Plant Condition and Life Management /
[ J.H. Bullock;A.S. Fairman ] / BALTICA III
7 Indentation-Energy-To-Fracture(IEF) Parameter for Characterization of DBTT Iin Carbon Steels Using Nondestructive Automated Ball Indentation(ABI) Technique /
[ F.M. Haggag;T.S. Byun;J.H. Hong;P.Q. Miraglia;K.L. Murty ] / Scripta Materialia
8 Microstructural Gradient in HAZ and its Influence upon Toe HAZ Fracture Toughness /
[ S.H. Chung;H. Takahashi; M. Suzuki ] / Welding in the World
9 A Study on Fracture Toughness of Welded Joint and Orientation in TMCP Steel by the SP Test. /
[ H.S. Yu;B.G. Ahn;D.Y. Lyu;S.H. Chung ] / Journal of KWS