Experimental Study on the Effect of CGHAZ Microstructure on CTOD of High-Strength Steel EQ56

Zi Yu Xia; Zhang Mu Miao; Tao Ma; Gang Chen; Sheng Peng

doi:10.4028/www.scientific.net/AMM.117-119.1874

Paper Titles

Study on a Method for Vibration Control of the Aeronautic Thin-Walled Workpiece in High-Speed Milling Process
p.1851

Study of Post-Fire Behavior of a Profiled Sheet-Ceramsite Concrete Composite Floor
p.1857

Numerical Simulation on Back-Extrusion Loadcase of Magnesium Alloy Wheel
p.1861

Analysis of the Relationship between CTOD Toughness and Micromechanism of Marine Steel Weld Joints
p.1867

Experimental Study on the Effect of CGHAZ Microstructure on CTOD of High-Strength Steel EQ56
p.1874

Neural Network Based Toughness Prediction in CGHAZ of Low-Alloy Steel Produced by Temper Bead Welding
p.1880

A Study of Fuzzy Neural Networks Control for the Quality of Resistance Spot Welding
p.1888

Interface Microstructure and Weld Strength of Steel/Aluminum Alloy Joints by Resistance Spot Welding
p.1895

Effect of Activating Flux and Welding Parameters on Performance of Aluminum Alloy Weldment in GTA Welding Process
p.1900

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 117-119Experimental Study on the Effect of CGHAZ...

Experimental Study on the Effect of CGHAZ Microstructure on CTOD of High-Strength Steel EQ56

Abstract:

The CGHAZ Microstructure has great effect on the toughness of welding joints and CTOD. This paper discussed the relationship between the CGHAZ and CTOD .The samples, carried out on high-strength steel EQ56, were observed by scanning electron microscopy. The Microstructural analysis result shows CGHAZ microstructure of EQ56-5, presenting high CTOD with 0.272mm, is low-carbon lath martensite and little M-A constituent, which contribute to the better toughness of EQ56-5. CGHAZ microstructure of EQ56-4, presenting the low CTOD with 0.082 mm, contains M-A constituent. The M-A constituent makes the CGHAZ brittle. The crack would grow easily along the M-A grain boundaries.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 117-119)

Pages:

1874-1879

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.117-119.1874

Citation:

Cite this paper

Online since:

October 2011

Authors:

Zi Yu Xia, Zhang Mu Miao, Tao Ma, Gang Chen, Sheng Peng

Keywords:

CGHAZ, Crack Tip Opening Displacement (CTOD), EQ56, High Strength Steel (HSS), Microstructure

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Yajiang Li: Welding organization performance and quality control, edited by Ren Wendou, Chemical Industry Press, Beijing (2005), in press（In Chinese）

Google Scholar

[2] Tao MA and Gang Chen: Welding Engineering Technology, volume 39, no. 9 (2010): 28-29

Google Scholar

[3] Jae-ll Jang, Jang-Bog Ju, Baik-Woo Lee et al. Micro mechanism of local brittle zonephenomenon in weld heat-affected zones of advanced 9%Ni steel [J].Journal of Materials Science Letters, 2001: 2149~2152

Google Scholar

[4] Jae-ll Jang, Jang-Bog Ju,Baik-Woo Lee et al.Experimental analysis of the practical LSZ effects on the brittle fracure performance of cryogenic steel HAZs with respect to crack arrest toughness near fusion line [J].Engineering Fracture Mechanics,2003:1245~1257

DOI: 10.1016/s0013-7944(02)00111-x

Google Scholar

[5] Jae-ll Jang,Jang-Bog Ju,Baik-Woo Lee et al.Determination of microstructural criterion for cryogenic toughness variation in actual HAZs using microstructure-distributionmaps.Materials Science and Engineering,2003:183~189

DOI: 10.1016/s0921-5093(02)00850-x

Google Scholar

[6] Zhiliang Zhou: TRANSACTIONSOFTHE CHINAWELDING INSTITUTION, volume 19, no.3 (1998): 147-153

Google Scholar

[7] Xiangxin Xu: ACTA METALLURGICA SINICA, volume 24, no.5 (1998): 361-365

Google Scholar