Effect of Induction Tempering on Mechanical Properties of#br#
 ColdFormed High Strength Steel Square Tube

Abstract

Abstract:

For the problems caused in the coldformed process at corners of high strength steel square tube, i.e. poor mechanical properties, severe hardening and residual stress concentration, a local induction tempering process online was proposed. This process could effectively solve the problems of corner defects of coldformed high strength steel square tube. The study found that the different tempering temperatures had a great impact on the mechanical properties of the bending angle. The results showed that the strength and elongation of the tempering square tube were almost the same as those of the vigor material at tempering temperature of 650℃. There was no crack when the displacement distance was larger than 1/2 of diagonal length at flattening test. The magnitude and distribution of the residual stresses had also been improved to some extent. As the tempering temperature was 700℃, the strength of the high strength steel square tube decreased, the heat affected zone became larger, and the distribution of the residual stresses got abnormal.

Key words: high strength steel square tube, coldformed, local induction tempering, mechanical property

CLC Number:

TG 142

PENG Xuefeng1，HAN Jingtao1，LIU Jing1，YAN Peijie2. Effect of Induction Tempering on Mechanical Properties of#br# ColdFormed High Strength Steel Square Tube[J]. Journal of Shanghai Jiaotong University, 2017, 51(4): 438-.

References

［1］MULLER M, BARRANS S M, BLUNT L. Predicting plastic deformation and work hardening during Vband formation ［J］. Journal of Materials Processing Technology, 2011, 211(4): 627636.
［2］晁灿，赵亦希，康稳，等.QSTE700型冷弯高强度高方管的冷作硬化效应［J］. 上海交通大学学报, 2014, 48(5): 605609.
CHAO Can, ZHAO Yixi, KANG Wen, et al. Strain in hardening effect of QSTE700 coldformed high strength steel square tube ［J］. Journal of Shanghai Jiao Tong University, 2014, 48(5): 605609.
［3］MA J, CHAN T, YOUNG B. Material properties and residual stresses of coldformed high strength steel hollow sections ［J］. Journal of Constructional Steel Research, 2015， 109： 152165.
［4］HUANG S, ZHAO Y, HE C. Shear fracture of advanced high strength steels ［J］. Journal of Iron and Steel Research, 2014, 21(10): 938944.
［5］LEE J, KIM J H, LEE M G, et al. Properties controlling the bendassisted fracture of AHSS ［J］. International Journal of Plasticity, 2015， 75： 100120.
［6］常颖，盈亮，靳菲，等.回火工艺对热成形AHSS力学特性的影响［J］.材料热处理学报, 2013, 34(11): 7478.
CHANG Ying, YING Liang, JIN Fei, et al. Effect of tempering treatment process on mechanical properties of hotstamping AHSS alloy ［J］. Transactions of Materials and Heat Treatment, 2013, 34(11): 7478.
［7］陈林恒，康永林，黎先浩，等.回火温度对600 MPa级低碳贝氏体钢组织和力学性能的影响［J］.北京科技大学学报, 2009(8)： 983987.
CHEN Linheng, KANG Yonglin, LI Xianhao, et al. Effect of tempering temperature on the microstructure and mechanical properties of 600 MPa grade low carbon bainitic steel ［J］. Journal of University of Science and Technology Beijing, 2009(8): 983987.
［8］KRAUSS G, THOMPOSON T W. Ferritic microstructure in continuously cooled low and ultralow carbon steels［J］. ISIJ International, 1995, 35(8): 937945.
［9］YANG S W, SHANG C J, HE X L. Stability of ultrafine microstructures during tempering ［J］. Journal of University of Science and Technology Beijing, 2001, 8(3): 119122.
［10］EOM J G, SON Y H, JEONG S W, et al. Effect of strain hardening capability on plastic deformation behaviors of material during metal forming ［J］. Materials & Design, 2014, 54(2): 10101018.

[1]	JIANG Zhao (姜朝), HUA Xueming* (华学明), HUANG Lijin (黄立进),WU Dongsheng (吴东升), LI Fang (李芳), CAI Yan (蔡艳). High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates [J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(2): 148-157.
[2]	YU Jianchao,LIN Youxi. Oxygen Free Copper Dynamic Mechanical Property in High Speed Machining Process [J]. Journal of Shanghai Jiaotong University, 2018, 52(5): 587-592.
[3]	JIN Xue,ZHU Ping,LI Han,WANG Qing. Research on Mechanical Properties of Locking Cap Lap Welds and Partitioned Seam Weld Model [J]. Journal of Shanghai Jiaotong University, 2017, 51(11): 1297-1303.
[4]	YAO Qi,LUO Zhen,LI Yang,DUAN Rui,HUANG Zunyue. Weld Forming and Mechanical Property of Stainless Steel Underwater Laser Welding [J]. Journal of Shanghai Jiaotong University, 2015, 49(03): 333-336.
[5]	HUANG Qian-wei (黄芊蔚), WANG Li-ping (王莉萍), WANG Jin-ye* (王瑾晔). Mechanical Properties of Artificial Materials for Bone Repair [J]. Journal of shanghai Jiaotong University (Science), 2014, 19(6): 675-680.
[6]	SHEN Limin1,GONG Jianming2,LIU Huansheng1,HUANG Yuxia. Effect of Coking on Thermal Diffusion and Mechanical Property of HP40Nb Tube [J]. Journal of Shanghai Jiaotong University, 2014, 48(08): 1159-1163.
[7]	YU Longa,LI Yaob,XIA Lijuana,DING Jinhonga,YANG Qia. Mechanical Property and Ultimate Bearing Capacity of Ship Airbags [J]. Journal of Shanghai Jiaotong University, 2014, 48(08): 1072-1077.
[8]	ZHENG Yu,LI Hongye,ZHUANG Xincun,ZHAO Zhen. A Review of Sheet Metal Shear Test Methods and Applications [J]. Journal of Shanghai Jiaotong University, 2014, 48(03): 422-426.
[9]	ZHANG Chao-feng1,2* (张超锋), ZHANG Zhi-sheng2 (张志胜), AOKI Tetsuhiko3 (青木徹彦), ZHANG Min4 (帐目). Research on the Dynamic Performance of Low-Yield-Strength Shear Panel Damper for Bridge Application [J]. Journal of shanghai Jiaotong University (Science), 2013, 18(1): 118-128.
[10]	FAN Yongfeng. Experimental Study of Mechanical Properties of Lime Stabilized Expansive Soil under the Condition of Eluviations [J]. Journal of Shanghai Jiaotong University, 2013, 47(09): 1390-1394.
[11]	NIU Jianhuia，ZHU Pinga，b，GUO Yongjina . Mechanical Properties of Hotdip Galvanized Dual Phase Steel DP590 and Its Constitutive Model [J]. Journal of Shanghai Jiaotong University, 2010, 44(10): 1382-1387.

Effect of Induction Tempering on Mechanical Properties of#br# ColdFormed High Strength Steel Square Tube

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 11

Recommended Articles

Metrics

Comments