Research and Application of Materials Science

Effect of Heat Treatment on Microstructure and Mechanical Properties of High Strength Low Alloy (HSLA) Steel

ZHAOSiyuan, CHENKaixuan, WUQIKUNYalikun, CHENXiaohua, WANGZidong

Abstract


In this paper, a Fe-based Mn-Ni–Cr–Mo high strength low alloy (HSLA) steel was prepared by using Vacuum melting, following by hot rolling with 78% deformation and various heat treatment processes. Microstructure were characterized by optical microscope (OM), scanning electron microscope (SEM) equipped with energy dispersive spectrometer. Tensile tests were performed. After direct quenching (Q) from 860℃, the samples were subjected to secondary quenching (L) at different intercritical temperatures within the two-phase region and various tempering temperatures (T). Results show that QLT treatment increases elongation and decreases yield ratio compared with conventional quenching and tempering process (QT). The optimum QLT heat treatment parameter in terms of temperature are determined as Q: 860℃, L: 700℃, and T: 600℃, resulting in the better combined properties with yield strength of 756MPa, tensile strength of 820MPa, tensile elongation of 16.76% and yield ratio of 0.923

Keywords


high strength low alloy (HSLA) steel; QLT heat treatment; tempering; microstructures; mechanical properties

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References


Czyryca, E.J. Advances in High Strength Steel Technology for Naval Hull Con-struction. Key Eng. Mater. 84–85, 491–520.

Jun Shao. Research status and development of ship steel [J]. Angang Technology 2013, (04), 1-4.

Wenkui Hao; Zhiyong Liu; Xianzong Wang; Xiaogang Li. The current status and development trend of strength and corrosion resistance of high-strength steel for ships [J]. Equipement Environmental Engineering 2014, 11 (01), 54-62.

Shike Yin, Changhong He,Yalin Li. Submarine steel and its welding materials in the United States and Japan [J]. Materials Development and Application 2008, (01), 58-65.

Heng Ma, Zhonghua Li, Xiaobo Zhu, etal. Development status of thick steel for aircraft carrier[J]. Shandong Metallurgy 2010, 32 (2), 8-10.

Xiaoyan Huang, Bo Liu. Structural materials for ships current status and development[J]. Ship & Boat 2004, (3), 21-24.

Shidong Wu. Development and Application of Structural Steel for U.S. Ships Study [J]. Shanghai Shipbuilding 2006, (4), 57-60.

Xin'an Cheng. Review and Prospect of Overseas Ship Steel[J]. Development and Application of Materials 1997, 12 (2), 46-48.

Chen X Z, Huang Y M. Microstructure and properties of 700MPa grade HSLA steel during high temperature deformation[J]. Journal of Alloys and Compounds 2015, 631:225-231.Fernandez J, Illesca S S, Guilemany J M. Effect of microalloying elements on the austenitic grain growth in a low carbon HSLA steel[J]. Materials Letters 2007, 61 (11), 2389-2392.

Fernandez J, Illesca S S, Guilemany J M. Effect of microalloying elements on the austenitic grain growth in a low carbon HSLA steel[J]. Materials Letters 2007, 61 (11), 2389-2392.

Heller S R, Friti I, John V. An evaluation of HY-80 steel as a structural material for submarine, Part I[J]. Naval Engineering Journal 1965, (2).

Heller S R, Friti I, Vasta J. An evaluation of HY-80 Steel as a structural material for submarine Part II[J]. Naval Engineering Journal 1965, (4).

Katsumata M, Ishiyama O, Inoue T. Microstructure and Mechanical Properties of Bainite Containing Martensite and Retained Austenite in Low Carbon HSLA Steels 1991(08).

S D, A G, S C. Microstructural characterization of controlled forged HSLA-80 steel by transmission electron microscopy[J]. Materials Characterization 2003, 50 (4-5), 305-315.

The State-of-Art and Development Trends of HSLA Steels in China[J]. Journal of Iron and Steel Research 2011,18 (S1), 1-13.

Yuan G. Kang J, Zhaodong W, Guodong W. Effect of Heat Treatment on Microstructure and Mechanical Properties of HSLA Plate Steel[A]. Chinese Society for Metals.Proceedings of the 10th International Conference on Steel Rolling[C].2010; 4.

Chaudhury Z A, Sarma D S. Influence of Heat Treatment on Structure and Properties of a HSLA Steel,1982; (02).

Bai D Q, Yue S, Maccagno T M. Effect of Deformation and Cooling Rate on the Microstructures of Low Carbon Nb-B Steels, 1998; (04).

S.J. Wu,G.J . Sun,Q.S. Ma,Q.Y. Shen,L. Xu. Influence of QLT treatment on microstructure and mechanical properties of a high nickel steel[J]. Journal of Materials Processing Tech 2013, 213 (1).

Yongchang Liu, Lei Shi, Chenxi Liu, Liming Yu, Zesheng Yan, Huijun Li. Effect of step quenching on microstructures and mechanical properties of HSLA steel[J]. Materials Science & Engineering A 2016, 675.

M.R.Akbarpour,A.Ekrami,Effect of Ferrite Volume Fraction on Workhardening Behavior of High Bainite Dualphase(DP)Steels,Mater.Sci.Eng.:A477, 2008; 306–310.

R.Bakhtiari, A.Ekrami,The Effect of Bainite Morphology on the Mechanical Properties of a High Bainite Dualphase(HBDP)Steel,Mater.Sci.Eng.:A525, 2009; 159–165.

Yasong Li, Ruixuan Li, Yong Zhang. Effects of Si Addition on Microstructure, Properties and Serration Behaviors of Lightweight Al-Mg-Zn-Cu Medium-entropy Alloys [J]. Research and Application of Materials Science 2019, (01),13-22.

Xiaohua Chen, Lili Qiu, Hao Tang, Xiang Luo, Longfei Zuo, Zidong Wang, Yanlin Wang. Effect of nanoparticles formed in liquid melt on microstructure and mechanical property of high strength naval steel[J]. Journal of Materials Processing Tech., 2015, 223-224

Tang, H., Chen, X.H., Chen, M.W., Zuo, L.F., Hou, B., Wang, Z.D., Microstructureand Mechanical Property of In-situ Nano-particle Strengthened Ferritic Steel by Novel Internal Oxidation, Mater. Sci. Eng. 2014; A 609, 293–299.

Ruiyang Wang , Shiqing Sun ,Song Wang , Nianlun Wei,Boshuai Cui . Analysis of M50 bearing steel turning bend fracture [J]. Internal Combustion Engines and Parts 2019, (04), 61-62.

Kai Feng , Daming Jiang, Bande Hong. Fracture Analysis of Low Carbon Duplex Steel [J]. Materials for Mechanical Engineering 1992, (03), 58-61.




DOI: https://doi.org/10.33142/msra.v1i2.1666

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Copyright (c) 2019 Siyuan ZHAO, Kaixuan CHEN, Yalikun WUQIKUN, Xiaohua CHEN, Zidong WANG

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