Kinetics of Acicular Ferrite Transformation in Weld Metal

被引：0

作者：

TIAN Zhiling ^{[1
]}

ZHANG Deqin ^{[2
]}

DU Zeyu ^{[3
]}

机构：

[1] Central Iron & Steel Research Institute

[2] Petroleum University

[3] Tianjin University

来源：

JournalofIronandSteelResearch(International) | 2001年 / 8卷 / 01期

关键词：

weld metal; acicular ferrite; kinetics; pipe steel;

D O I：

10.13228/j.boyuan.issn1006-706x.2001.01.038

中图分类号：

TG401 [焊接冶金问题];

学科分类号：

080201 ; 080503 ;

摘要：

Acicular Ferrite(AF) is beneficial in welds because it provides a tough and strong microstructure.Therefore,much works have been done in the study of the effect of alloying elements and welding conditions aimed at obtaining more AF in the weld metal.However,the knowledge about the nature of AF is limited due to the lack of kinetics researches.In this paper,the kinetic curves of AF transformation in an X65 weld metal were established by means of welding thermal simulation test.The results showed that AF transformation is a typical diffusion process of nucleation and growth with incubation period.AF transformation in weld metal obeys the relationship described by JMA Equation.The effect of welding heat input was also studied.

引用

页码：34 / 36

页数：3

共 6 条

[1]

Microstructural effects on the stress corrosion cracking behavior of medium and high strength steels[J] . R. Kerr,F. Solana,I. M. Bernstein,A. W. Thompson.Metallurgical Transactions A . 1991 (1)

[2] THE INTERACTION OF HYDROGEN AND THE CEMENTITE FERRITE INTERFACE IN CARBON-STEEL [J].

HONG, GW ;

LEE, JY .

JOURNAL OF MATERIALS SCIENCE, 1983, 18 (01) :271-277

[3]

Hydrogen-induced cracking in 4340-type steel: Effects of composition, yield strength, and H 2 pressure[J] . N. Bandyopadhyay,Jun Kameda,C. J. Mcmahon.Metallurgical Transactions A . 1983 (4)

[4]

Hydrogen-controlled cracking—An approach to threshold stress intensity[J] . W. W. Gerberich,Y. T. Chen.Metallurgical Transactions A . 1975 (2)

[5]

A unified theory for some effects of hydrogen source, alloying|elements, and potential on crack growth in martensitic AISI 4340 steel[J] . G. Sandoz.Metallurgical Transactions . 1972 (5)

[6]

Effect of composition on the environmentally induced delayed failure of precracked high-strength steel[J] . E. A. Steigerwald,W. D. Benjamin.Metallurgical Transactions . 1971 (2)

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