Thermodynamic Analysis on Phase Transformation of Acicular Ferrite in Weld of 10Ni5CrMoV Steel

Hong HAO; Min DING

doi:10.7512/j.issn.1001-2303.2022.08.11

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Thermodynamic Analysis on Phase Transformation of Acicular Ferrite in Weld of 10Ni5CrMoV Steel
Vol. 52, Issue 8, Pages: 81-88(2022)
Received：08 January 2022，

Revised：2022-05-07，

Published：25 August 2022
DOI： 10.7512/j.issn.1001-2303.2022.08.11
稿件说明：

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郝红，丁敏.10Ni5CrMoV钢焊缝针状铁素体相变热力学分析［J］.电焊机，2022，52（8）：81-88. DOI： 10.7512/j.issn.1001-2303.2022.08.11.

HAO Hong, DING Min.Thermodynamic Analysis on Phase Transformation of Acicular Ferrite in Weld of 10Ni5CrMoV Steel[J].Electric Welding Machine, 2022, 52(8): 81-88. DOI： 10.7512/j.issn.1001-2303.2022.08.11.

摘要

基于各种相变热力学模型，计算了10Ni5CrMoV钢焊缝针状铁素体相变热力学模型，通过对焊缝金属相变驱动力的计算，以期揭示10Ni5CrMoV钢焊缝奥氏体变成针状铁素体机制。利用传统扩散模型、类珠光体转变模型和贫碳区切变模型探讨热力学的转变机制，结果表明，针状铁素体相变驱动力与原奥氏体中C含量相关，C含量越低，其驱动力越大。随着奥氏体转变针状铁素体的温度降低，贫碳区C原子的活度增大，针状铁素体的长大驱动力变大，从而温度的降低有利于针状铁素体的形成。在中温相变温度区间，700 K时的针状铁素体相变驱动力约为950 K时的6.1倍。基于热力学计算推测10Ni5CrMoV钢焊缝主要以贫碳区切变模式形成针状铁素体。适当延长焊接时中温相变停留时间，是提高针状铁素体含量的较好工艺选择。

Abstract

Based on various thermodynamic models of phase transformation

the thermal model of acicular ferrite transformation in 10Ni5CrMoV steel weld was calculated. The driving force of weld metal transformation was calculated to reveal the mechanism of austenite transforming into acicular ferrite in 10Ni5CrMoV steel weld. The traditional diffusion model

pearlite transformation model and carbon lean zone shear model were used to explore the thermodynamic transformation mechanism. The results show that the lower the carbon contents in the original austenite

the greater the driving force of the acicular ferrite transformation. When the temperature of the austenite transforming into acicular ferrite reduces

the activity of carbon atoms in the carbon poor zone increases

and the growth driving force of acicular ferrite improves

which is conducive to the formation of acicular ferrite. The driving force of acicular ferrite transformation at 700 K was about 6.1 times of that at 950 K. Based on thermodynamic calculation

it is inferred that acicular ferrite is formed mainly in the form of shearing transition in carbon poor zone. It's a better process choice to increase the content of acicular ferrite by prolonging the residence time of medium temperature transformation during welding process.

关键词

Keywords

references

余刚，丁敏，崔海超，等 . 10Ni5CrMoV钢旋转电弧窄间隙GMAW研究［J］. 焊接技术， 2010 ， 39 （ 11 ）： 12 - 15 .

YU Gang ， DING Min ， CUI Haichao ， et al . Study on rotation arc narrow gap gas metal arc welding of 10Ni 5CrMoV steel ［J］. Welding Technology ， 2010 ， 39 （ 11 ）： 12 - 15 .

李大用，杨东青，王苹，等 . 高铬镍奥氏体焊丝焊接10Ni5CrMoV钢接头组织性能分析［J］. 焊接学报， 2017 ， 38 （ 05 ）： 87 - 91 .

LI Dayong ， YANG Dongqing ， WANG Ping ， et al . Analysis of microstructure and properties of 10Ni5CrMoV steel joint welded with high chromium nickel austenitic welding wire ［J］. Transactions of the China Welding Institution ， 2017 ， 38 （ 05 ）： 87 - 91 .

张宇清，魏金山，马成勇，等 . 10Ni5CrMoV钢MAG焊接接头的显微组织与力学性能［J］. 机械工程材料， 2017 ， 41 （ 08 ）： 75 - 79 .

ZHANG Yuqing ， WEI Jinshan ， MA Chengyong ， et al . Microstructure and mechanical properties of MAG we-lded joint of 10Ni5CrMoV steel ［J］. Mechanical Engineering Materials ， 2017 ， 41 （ 08 ）： 75 - 79 .

宋威，魏博，肖红军，等 . 15Ni3CrMoV与10Ni5CrMoV异种钢对接接头的显微组织及力学性能［J］. 机械工程材料， 2017 ， 41 （ 03 ）： 7 - 12 .

SONG Wei ， WEI Bo ， XIAO Hong-jun ， et al . Microstructure and mechanical properties of butt joint of 15Ni3Cr MoV and 10Ni5CrMoV dissimilar steel ［J］. Mechanical Engineering Materials ， 2017 ， 41 （ 03 ）： 7 - 12 .

周月波 . 10Ni5CrMoV钢MIG焊接接头的组织与力学性能研究［D］. 黑龙江：哈尔滨工程大学， 2002 .

ZHOU Yuebo . Study on Microstructure and mechanical properties of MIG welded joint of 10Ni5CrMoV steel ［D］. Heilongjiang ： Harbin Engineering University ， 2002 .

张德勤 . 微合金钢焊缝金属中针状铁素体形成机理研究［D］. 天津：天津大学， 2000 .

ZHANG Deqin . Study on formation mechanism of acicular ferrite in weld metal of microalloyed steel ［D］. Tianjin ： Tianjin University ， 2000 .

Seo J S ， Kim H J ， Ryoo H S . Microstructural Parameter Controlling Weld Metal Cold Cracking ［J］. Journal of Achievements in Materials and Manufacturing Engineering ， 2008 ， 27 （ 2 ）： 199 - 202 .

丁敏，唐新华，张培磊，等 . 5%Ni船舶用钢及其焊接性［J］. 焊接， 2010 （ 12 ）： 53 - 55 .

DING Min ， TANG Xinhua ， ZHANG Peilei ， et al . 5% Ni marine steel and its weldability ［J］. Welding & Joining ， 2010 （ 12 ）： 53 - 55 .

许晓锋 . 微合金钢针状铁素体相变理论研究［D］. 山东：中国石油大学， 2007 .

XU Xiaofeng . Theoretical studies on acicular ferrite transformation in micro-alloyed steel ［D］. Shandong ： China University of petroleum ， 2007 .

刘宗昌，任慧平 . 贝氏体与贝氏体相变［M］. 北京：冶金工业出版社， 2009 .

徐祖耀，刘世楷 . 贝氏体相变与贝氏体［M］. 北京：科学出版社， 1991 .

方鸿生，王家军 . 贝氏体相变［M］. 北京：科学出版社， 1999 .

彭宁琦，唐广波，刘正东，等 . Fe-∑ X i -C合金系超组元模型Zener两参数的修正［J］. 金属学报， 2009 ， 45 （ 3 ）： 331 - 337 .

PENG Ningqi ， TANG Guangbo ， LIU Zhengdong ， et al . Correction of Zener’s two parameters of supercomponent model for Fe-∑X i -C alloy system ［J］. Acta Metallurgica Sinica ， 2009 ， 45 （ 3 ）： 331 - 337 .

刘艳，吴毅雄，雷毅，等 . 微合金钢焊缝针状铁素体相变热力学研究［J］. 热加工工艺， 2010 ， 39 （ 03 ）： 5 - 9 .

LIU Yan ， WU Yixiong ， LEI Yi ， et al . Thermodynamic study on acicular ferrite phase transformation in micro alloyed steel welded seam ［J］. Hot Working Technology ， 2010 ， 39 （ 03 ）： 5 - 9 .

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