The Microstructure and Property of the Heat Affected zone in C-Mn Steel Treated by Rare Earth

被引：11

作者：

Song, Ming-ming ^{[1
,2
]}

Xie, Yu-Min ^{[1
]}

Song, Bo ^{[3
]}

Xue, Zheng-liang ^{[1
,2
]}

Nie, Nan ^{[1
]}

Hu, Chun-lin ^{[4
]}

Xu, Run-sheng ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan, Hubei, Peoples R China

[2] Wuhan Univ Sci & Technol, Key Lab Ferrous Met & Resources Utilizat, Minist Educ, Wuhan, Hubei, Peoples R China

[3] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing, Peoples R China

[4] Masteel Design & Res Inst Co Ltd, Maanshan Iron & Steel Co LTD, Long Prod Business Div, Maanshan, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2019年 / 38卷 / 2019期

关键词：

steel; Al; rare earth; inclusion; acicular ferrite; IN-SITU OBSERVATION; ACICULAR FERRITE; NONMETALLIC INCLUSIONS; MECHANICAL-PROPERTIES; NUCLEATION; TOUGHNESS; TRANSFORMATION; EVOLUTION; POTENCY; INPUT;

D O I：

10.1515/htmp-2017-0175

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructures and impact properties of the heat affected zone (HAZ) in steel treated by rare earth (RE) under different welding processes were discussed. The effect of Al on the impact properties of the HAZ in RE treated steel was analyzed. It finds that when the welding t(8/5) is smaller than 111 s, the main microstructure in steels is bainite/widmanstatten. The impact toughness of the HAZ is lower than that of the steel matrix. When t(8/5) is more than 250 s, the microstructure is mainly acicular ferrite (AF) in the steel treated by RE, and the impact toughness of HAZ is obviously improved. Even under the welding processing with t(8/5) about 600 s in RE treated steel can still obtain a lot of AF. While in the steel killed by Al and treated by RE, the main microstructure is parallel cluster of bainite/widmanstatten, and the impact toughness of HAZ is significantly lower than that of low-Al RE treated steel. Al can deteriorate the optimizing of RE treatment on HAZ.

引用

页码：362 / 369

页数：8

共 23 条

[1] In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Ce-Containing Inclusions in 16Mn Steel [J].

Bin, Wen ;

Bo, Song .

STEEL RESEARCH INTERNATIONAL, 2012, 83 (05) :487-495

[2] EFFECT OF CARBIDE AND NITRIDE ADDITIONS ON HETEROGENEOUS NUCLEATION BEHAVIOR OF LIQUID IRON [J].

BRAMFITT, BL .

METALLURGICAL TRANSACTIONS, 1970, 1 (07) :1987-&

[3] Effect of Mg on the evolution of non-metallic inclusions in Mn-Si-Ti deoxidised steel during solidification: experiments and thermodynamic calculations [J].

Chang, CH ;

Jung, IH ;

Park, SC ;

Kim, HS ;

Lee, HG .

IRONMAKING & STEELMAKING, 2005, 32 (03) :251-257

[4] A study on the relationship between microstructure and mechanical properties of acicular ferrite and upper bainite [J].

Costin, Walter L. ;

Lavigne, Olivier ;

Kotousov, Andrei .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 663 :193-203

[5] Study of Mn absorption by complex oxide inclusions in Al-Ti-Mg killed steels [J].

Hou, Yanhui ;

Zheng, Wan ;

Wu, Zhenhua ;

Li, Guangqiang ;

Moelans, Nele ;

Guo, Muxing ;

Khan, Babar Shahzad .

ACTA MATERIALIA, 2016, 118 :8-16

[6] Effect of welding heat input on microstructures and toughness in simulated CGHAZ of V-N high strength steel [J].

Hu, Jun ;

Du, Lin-Xiu ;

Wang, Jian-Jun ;

Gao, Cai-Ru .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 577 :161-168

[7] Factors Affecting the Inclusion Potency for Acicular Ferrite Nucleation in High-Strength Steel Welds [J].

Kang, Yongjoon ;

Jeong, Seonghoon ;

Kang, Joo-Hee ;

Lee, Changhee .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2016, 47A (06) :2842-2854

[8] MnS precipitation in association with manganese silicate inclusions in Si/Mn deoxidized steel [J].

Kim, HS ;

Lee, HG ;

Oh, KS .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (06) :1519-1525

[9] Effects of inclusion size and acicular ferrite on cold cracking for high-strength steel welds of YS 600 MPa grade [J].

Lee, M. ;

Kang, N. ;

Liu, S. ;

Cho, K. .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2016, 21 (08) :711-719

[10] Influence of zirconium on mechanical properties and phase transformation in low carbon steel [J].

Li, X. B. ;

Min, Y. ;

Liu, C. J. ;

Jiang, M. F. .

MATERIALS SCIENCE AND TECHNOLOGY, 2016, 32 (05) :454-462

← 1 2 3 →