Effects of Homogenizing Annealing and Forging on Strength and Toughness of Dual-Phase Wear Resistant Steels

doi:10.12068/j.issn.1005-3026.2016.04.009

Abstract

Abstract: The effects of homogenizing annealing and forging on the microstructure， strength and toughness of the dual-phase wear-resistant steel were investigated. The results showed that the microstructure of the steel contained mainly lath martensite， acicular bainite and a little retained austenite under 980℃ homogenizing annealing for 4 and 8hrs respectively and 1150℃ forging. The minimum grain size of the steel is No.7.0~7.5 grade after forging while the maximum grain size of the steel homogenized is No.6.5~7.0 grade. The holding time of the homogenizing annealing is the main factor that affects the mechanical properties of dual-phase wear resistant steels， and the impact toughness and elongation values of the test steels holding for 4hrs are higher than that of the test steels holding for 8hrs. Forging deformation improves the strength and toughness of dual-phase wear resistant steels more significantly than that under homogenizing annealing， and the optimized process parameters were as follow with initial forging temperature of 1150℃， final forging temperature of 800℃ and forging ratio of 2.

Key words: dual-phase wear-resistant steel, homogenizing annealing, forging, strength and toughness, microstructure

CLC Number:

TG146.2

LIU Xing-gang， HAN Ming-bo， WANG Xue-peng， ZHANG Guo-zhi. Effects of Homogenizing Annealing and Forging on Strength and Toughness of Dual-Phase Wear Resistant Steels[J]. Journal of Northeastern University Natural Science, 2016, 37(4): 496-499.

References

[1]张国志，田学锋，刘兴刚，等.化学成分对耐磨铸钢组织与性能的影响［J］.东北大学学报(自然科学版)，2011，32(1):89-93.(Zhang Guo-zhi，Tian Xue-feng，Liu Xing-gang，et al.Effect of chemical compositions on microstructure and properties of wear-resistant casting steels［J］.Journal of Northeastern University(Natural Science)，2011，32(1):89-93.
[2]Liu X G，Yu Y W，Pan X，et al.Research on the effects of the refining treatment to the properties of dual-phase wear-resistant steel［J］.Advanced Materials Research.2013，602/603/604:395-400.
[3]Seyedrezai H，Pilkey A K，Boyd J D.Effect of pre-IC annealing treatments on the final microstructure and work hardening behavior of a dual-phase steel［J］.Materials Science and Engineering:A，2014，594(6):178-188.
[4]刘自勇，杨涤心，谢敬佩，等.均匀化退火对ZG80Cr2MnMoSi钢组织的影响［J］.热处理，2012，27(5):33-36.(Liu Zi-yong，Yang Di-xin，Xie Jing-pei，et al.Effect of homogenizing annealing on microstructure of ZG80Cr2MnMoSi steel［J］. Hot Treatment，2012，27(5):33-36.)
[5]刘伟建，李晶，霍向东.高强度低合金耐磨钢NM400的强韧化机制［J］.钢铁研究学报，2014，25(7):77-82.(Liu Wei-jian，Li Jing，Huo Xiang-dong.Mechanism of strengthening and toughening for wear resistant steel NM400 with high strength and low alloy［J］.Journal of Iron and Steel Research，2014，25(7):77-82.)
[6]蒋汉祥，孙善长，余成龙，等.高韧性耐磨钢(W-2)的研制［J］.重庆大学学报(自然科学版)，2002(1):44-46.(Jiang Han-xiang，Sun Shan-chang，Yu Cheng-long，et al.Research on the steel of high toughness and wear resistance (W-2) ［J］.Journal of Chongqing University(Natural Science)，2002(1):44-46.)
[7]Luo K S，Bai B Z.Microstructure mechanical properties and high stress abrasive wear behavior of air-cooled MnCrB cast steels［J］.Materials and Design，2009，31(5):2510-2516.
[8]Dhua S K，Sarkar P P.Development of ultrafine grains in C-Mn steel plates through hot-rolling and air-cooling ［J］Materials Science and Engineering:A，2013，575(17):177-188.
[9]Thomas A，Wahabi M，Cabrera J M，et al.High temperature deformation of Inconel 718［J］.Journal of Materials Processing Technology，2006，177(1):469-472.
[10]Langdon T G.Twenty-five years of ultrafine-grained materials:achieving exceptional properties through grain refinement［J］. Acta Materialia，2013，61(19):7035-7039.

[1]	WANG Zhen， JIANG Mao-fa， LIU Cheng-jun， MIN Yi. Microstructure Analysis of Mold Flux of Cao-SiO₂-Al₂O₃-Na₂O-MgO System for Ingot Casting [J]. Journal of Northeastern University(Natural Science), 2023, 44(4): 517-523.
[2]	WEN Xue-long， WANG Cheng-bao， LIU Wen-bo， REN Hai-yang. Experimental Study on the Microstructure of FeCoNiCr High-Entropy Alloys by Selective Laser Melting [J]. Journal of Northeastern University(Natural Science), 2023, 44(4): 536-543.
[3]	JIA Peng， ZHU Peng-cheng， LI Bo， MAO Song-ze. Experimental Study on Wave Characteristics and Acoustic Emission Characteristics of Thermal Damaged Marble [J]. Journal of Northeastern University(Natural Science), 2023, 44(2): 279-288.
[4]	ZHI Wei-jun ， YAO Zan， JIANG Zhou-hua. Microstructure Evolution of High Carbon Galvanized Steel Wire and Effect on Torsional Property [J]. Journal of Northeastern University(Natural Science), 2023, 44(1): 49-54.
[5]	REN Zhao-hui， WANG Yun-he， LI Zhu-hong， WANG Chen. Numerical Simulation Study of Stress Fields in the Additive Manufacturing and Micro-forging Process [J]. Journal of Northeastern University(Natural Science), 2022, 43(6): 881-887.
[6]	DONG Yan-wu， PENG Fei， TIAN Jia-long， JIANG Zhou-hua. Effect of Aging Treatment on Microstructure and Mechanical Properties of 10Ni10Mn2CuAl Steel [J]. Journal of Northeastern University(Natural Science), 2022, 43(5): 646-651.
[7]	ZHI Wei-jun ， YAO Zan， JIANG Zhou-hua. Research on Fine Characterization of Microstructure Difference of High Carbon Galvanized Steel Wire [J]. Journal of Northeastern University(Natural Science), 2022, 43(4): 501-508.
[8]	SONG Hong-yu， LIU Hai-tao， WANG Guo-dong. Hot Rolling Twinning Behavior of Strip Casting Grain-Oriented Silicon Steel [J]. Journal of Northeastern University(Natural Science), 2022, 43(2): 182-187.
[9]	LIU Geng， LI Hui-jie， WANG Qing-hai， YE Qi-bin. Tempering Stability of a 690MPa Grade Ultra-heavy Rack Steel for Offshore Platform [J]. Journal of Northeastern University(Natural Science), 2022, 43(2): 188-196.
[10]	ZHAO Yu-hui ， GAO Meng-qiu ， ZHAO Ji-bin ， HE Chen. Microstructure and Properties of WC Particles Reinforced 316L Stainless Steel Composites Prepared by Additive and Subtractive Manufacturing [J]. Journal of Northeastern University(Natural Science), 2022, 43(2): 197-205.
[11]	WANG Yin， LI Yong， QIAN Xiao-ming， ZHANG Bo-si. Effect of the Cooling Rate of Vacuum Centrifugal Casting on Microstructure and Mechanical Properties of 7055 Aluminum Alloy [J]. Journal of Northeastern University(Natural Science), 2022, 43(12): 1769-1776.
[12]	REN Zhao-hui， ZHANG Zi-ting， ZHANG Xing-wen， WANG Chen. Strengthening Mechanism Analysis and Numerical Simulation of Ultrasonic Micro-forging of TC4 Titanium Alloy Processing [J]. Journal of Northeastern University(Natural Science), 2021, 42(9): 1306-1312.
[13]	YAO Yun-long， XIU Shi-chao， SUN Cong， HONG Yuan. Dynamic Recrystallization Behavior of Grinding Surface Based on 40Cr High Temperature Dynamic Mechanical Properties [J]. Journal of Northeastern University(Natural Science), 2021, 42(8): 1120-1126.
[14]	GAO Cai-ru， QU Bing-bing， TIAN Yu-dong， DU Lin-xiu. Effect of Tempering Temperature on Microstructure and Mechanical Properties of On-Line Quenched Q690q Bridge Steel [J]. Journal of Northeastern University(Natural Science), 2021, 42(7): 927-933.
[15]	BI Meng-yuan， XIE Ren-yi， ZHANG Yi-fan， YI Hai-long. Microstructure Evolution and Recrystallization Kinetics of CoCrFeNi High Entropy Alloy [J]. Journal of Northeastern University(Natural Science), 2021, 42(7): 933-938.