Mechanical properties of low-transformation-temperature weld metals after low-temperature postweld heat treatment

被引：20

作者：

Wu, Shipin ^{[1
,2
]}

Wang, Dongpo ^{[1
,2
,3
]}

Zhang, Zhi ^{[4
]}

Li, Chengning ^{[1
,2
]}

Liu, Xiuguo ^{[1
,2
]}

Meng, Xianqun ^{[5
]}

Feng, Zhongyuan ^{[1
,2
]}

Di, Xinjie ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[2] Tianjin Key Lab Adv Joining Technol, Tianjin 300350, Peoples R China

[3] State Key Lab Met Mat Marine Equipment & Applicat, Anshan, Peoples R China

[4] Tianjin Univ, Sch Mech Engn, Tianjin, Peoples R China

[5] Tianjin Met Grp Flourish Steel Ind Co Ltd, Tianjin, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2019年 / 24卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Low-transformation-temperature welding material; stability of retained austenite; postweld heat treatment; martensitic transformation; toughness; transformation-induced plasticity effect; RETAINED AUSTENITE; DEFORMATION-BEHAVIOR; FATIGUE-STRENGTH; STEEL; MICROSTRUCTURE; MARTENSITE; STABILITY; DUCTILITY; CONSUMABLES; EVOLUTION;

D O I：

10.1080/13621718.2018.1492776

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The as-welded low-transformation-temperature (LTT) weld metal with martensite/retained austenite (RA) dual phase exhibits high toughness and ductility, but the yield strength (YS) is very low. After low-temperature postweld heat treatment at 300 degrees C, the YS, toughness and ductility of dual-phase LTT weld metal increase dramatically, while there is a slight effect on mechanical properties of full martensite LTT weld metal. During the low-temperature postweld heat treatment, carbon atoms diffuse from martensite into RA, which increases the stability of RA. The improvements of mechanical properties for dual-phase LTT weld metal after low-temperature postweld heat treatment are attributed to the increased stability of RA and enhanced transformation-induced plasticity effect.

引用

页码：112 / 120

页数：9

共 38 条

[1]

[Anonymous], J JPN I MET

[2]

DYSON DJ, 1970, J IRON STEEL I, V208, P469

[3] Comparison of two types of low-transformation-temperature weld metals based on solidification mode [J].

Feng, Zhong-Yuan ;

Di, Xin-Jie ;

Wu, Shi-Pin ;

Zhang, Zhi ;

Liu, Xiao-Qian ;

Wang, Dong-Po .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2018, 23 (03) :241-248

[4] Improving fatigue strength of welded 1300 MPa yield strength steel using HFMI treatment or LTT fillers [J].

Harati, Ebrahim ;

Svensson, Lars-Erik ;

Karlsson, Leif .

ENGINEERING FAILURE ANALYSIS, 2017, 79 :64-74

[5] Applicability of low transformation temperature welding consumables to increase fatigue strength of welded high strength steels [J].

Harati, Ebrahim ;

Karlsson, Leif ;

Svensson, Lars-Erik ;

Dalaei, Kamellia .

INTERNATIONAL JOURNAL OF FATIGUE, 2017, 97 :39-47

[6] Influence of Martensite Fraction on the Stabilization of Austenite in Austenitic-Martensitic Stainless Steels [J].

Huang, Qiuliang ;

De Cooman, Bruno C. ;

Biermann, Horst ;

Mola, Javad .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2016, 47A (05) :1947-1959

[7] The effect of heat treatment on mechanical properties and corrosion behavior of AISI420 martensitic stainless steel [J].

Isfahany, A. Nasery ;

Saghafian, H. ;

Borhani, G. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (09) :3931-3936

[8] Characterization of individual retained austenite grains and their stability in low-alloyed TRIP steels [J].

Jimenez-Melero, E. ;

van Dijk, N. H. ;

Zhao, L. ;

Sietsma, J. ;

Offerman, S. E. ;

Wright, J. P. ;

van der Zwaag, S. .

ACTA MATERIALIA, 2007, 55 (20) :6713-6723

[9] Martensite in steel: strength and structure [J].

Krauss, G .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 273 :40-57

[10] Properties and weldability of modified low transformation temperature filler wires [J].

Kromm, A. ;

van der Mee, V. ;

Kannengiesser, T. ;

Kalfsbeek, B. .

WELDING IN THE WORLD, 2015, 59 (03) :413-425

← 1 2 3 4 →