回火温度对22MnCrNiMo系泊链钢焊缝组织与性能的影响

特殊钢 ›› 2022, Vol. 43 ›› Issue (2): 69-74.

回火温度对22MnCrNiMo系泊链钢焊缝组织与性能的影响

季峰¹, 李仲昱², 王晓国², 戴益波², 张艳², 郭宇航²

1江苏艾达通材料科技有限公司，镇江212003；
2江苏科技大学材料科学与工程学院，镇江212003

收稿日期:2021-07-12 出版日期:2022-04-01 发布日期:2022-06-10
作者简介:季峰(1984-),男，硕士(江苏科技大学)，高级工程师，金属材料工艺研究。

Effect of Different Tempering Temperature on Mechanical and Properties of 22MnCrNiMo Mooring Chain Steel Weld Zone

Ji Feng¹ ,Li Zhongyu², Wang Xiaoguo², Dai Yilxt², Zhang Yan² , Guo Yuhang²

1 Jiangsu Aida Tong Material Technolgy Co, Zhenjiang 212003 ；
2 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003)

Received:2021-07-12 Published:2022-04-01 Online:2022-06-10

摘要/Abstract

摘要： 研究了不同回火温度对22MnCrNiMo系泊链钢（R4s）闪光焊缝区组织与性能变化的影响。淬火工艺优先采用循环淬火（水冷）,结合工厂实际生产温度及理论相变点,淬火温度为920℃。回火温度300、400、500、600℃,时间为30 min。结果表明,随着回火温度升高,内应力逐渐降低,高温600℃回火时,焊缝区得到回火索氏体组织,焊缝区抗拉强度为1 071 MPa,屈服强度为1 021 MPa,延伸率达17%,断面收缩率为66.60%,此时焊缝区强度和韧性都得到最好配合。

Abstract: In order to study the effect of different tempering temperature on microstructure and properties of ( R4s) 22MnCrNiMo mooring chain steel flash weld zone. Cycle quenching ( water cooling) is preferred for quenching process. According to the actual production temperature and theoretical transformation point, the quenching temperature is 920 °C. The tempering temperature is 300, 400, 500, 600 °C , and the tempering holding time is 30 min. The results show that with the increase of tempering temperature, the internal stress gradually decreases. When tempering at 600 °C , tempered sorbite structure is obtained in the weld zone, the tensile strength, yield strength, elongation and area reduction of the weld are 1 071 MPa, 1 021 MPa, 17% and 66. 60% respectively, at this time, the strength and toughness of the weld zone are best matched.

Key words: , Mooring Chain Steel, 22MnCrNiMo, Tempering Temperature, Mechanical Property, Weld

季峰, 李仲昱, 王晓国, 戴益波, 张艳, 郭宇航. 回火温度对22MnCrNiMo系泊链钢焊缝组织与性能的影响[J]. 特殊钢, 2022, 43(2): 69-74.

Ji Feng , Li Zhongyu, Wang Xiaoguo, Dai Yilxt, Zhang Yan , Guo Yuhang. Effect of Different Tempering Temperature on Mechanical and Properties of 22MnCrNiMo Mooring Chain Steel Weld Zone [J]. Special Steel, 2022, 43(2): 69-74.