Effect of morphologies of martensite-austenite constituents on impact toughness in intercritically reheated coarse-grained heat-affected zone of HSLA steel

被引：140

作者：

Luo, Xiang ^{[1
]}

Chen, Xiaohua ^{[2
]}

Wang, Tao ^{[1
]}

Pan, Shiwei ^{[2
]}

Wang, Zidong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 710卷

关键词：

Martensite austenite constituent; Intercritically reheated coarse-grained heat-affected zone; Toughness; HSLA; LOW-ALLOY STEEL; CARBON BAINITIC STEEL; HIGH-STRENGTH; MECHANICAL-PROPERTIES; MICROALLOYED STEELS; PIPELINE STEEL; MICROSTRUCTURE; TEMPERATURE; COMBINATION; FRACTURE;

D O I：

10.1016/j.msea.2017.10.079

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

By using the gleeble-3500 simulator, three different two-pass weld thermal cycles were applied to base metal of a high strength low alloy (HSLA) steel with the purpose of obtaining martensite-austenite (MA) constituents of different morphologies in intercritically reheated coarse-grained heat-affected zones (ICGHAZ). Morphology of each MA constituent was characterized by maximum length, maximum width and aspect ratio (maximum length/maximum width). Toughness of thermal simulated specimens was examined by using an instrumented Charpy impact tester. Behaviour of cracks was present by Charpy impact curve and typical data. Correlation between behaviour of cracks and morphologies of MA constituents was further analysed by observing crack propagation and microstructure of MA constituent. Fracture modes of MA constituents with slender and massive shape were proposed. Results show that slender MA constituents are more harmful to toughness compared with massive ones.

引用

页码：192 / 199

页数：8

共 27 条

[1] Effect of welding heat input on microstructure and mechanical properties of simulated HAZ in Cu containing microalloyed steel [J].

Amer, Amer E. ;

Koo, Min Y. ;

Lee, Kyong H. ;

Kim, Sang H. ;

Hong, Soon H. .

JOURNAL OF MATERIALS SCIENCE, 2010, 45 (05) :1248-1254

[2] Mechanical and metallurgical investigation of martensite-austenite constituents in simulated welding conditions [J].

Bayraktar, E ;

Kaplan, D .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 153 :87-92

[3] CLEAVAGE INITIATION IN THE INTERCRITICALLY REHEATED COARSE-GRAINED HEAT-AFFECTED ZONE .1. FRACTOGRAPHIC EVIDENCE [J].

DAVIS, CL ;

KING, JE .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1994, 25 (03) :563-573

[4] Effect of microstructure on cleavage resistance of high-strength quenched and tempered steels [J].

Di Schino, A. ;

Guarnaschelli, C. .

MATERIALS LETTERS, 2009, 63 (22) :1968-1972

[5]

FAIRCHILD DP, 1991, WELD J, V70, pS321

[6] Local mechanical properties of intercritically reheated coarse grained heat affected zone in low alloy steel [J].

Haugen, Veronica G. ;

Rogne, Bjorn Rune Soras ;

Akselsen, Odd M. ;

Thaulow, Christian ;

Ostby, Erling .

MATERIALS & DESIGN, 2014, 59 :135-140

[7] Effect of weld peak temperature on the microstructure, hardness, and transformation kinetics of simulated heat affected zone of hot rolled ultra-low carbon high strength Ti-Mo ferritic steel [J].

Hu, Jun ;

Du, Lin-Xiu ;

Xie, Hui ;

Dong, Fu-Tao ;

Misra, R. D. K. .

MATERIALS & DESIGN, 2014, 60 :302-309

[8] Influence of martensite-austenite (MA) on impact toughness of X80 line pipe steels [J].

Huda, Nazmul ;

Midawi, Abdelbaset R. H. ;

Gianetto, James ;

Lazor, Robert ;

Gerlich, Adrian P. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 662 :481-491

[9] Variations in DBIT and CTOD within weld heat-affected zone of API X65 pipeline steel [J].

Ju, Jang-Bog ;

Kim, Woo-sik ;

Jang, Jae-il .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 546 :258-262

[10] MICROSTRUCTURE AND LOCAL BRITTLE ZONE PHENOMENA IN HIGH-STRENGTH LOW-ALLOY STEEL WELDS [J].

KIM, BC ;

LEE, S ;

KIM, NJ ;

LEE, DY .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1991, 22 (01) :139-149

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