690 MPa高强度海洋工程用钢1 000 ~ 1100 ℃热变形行为

特殊钢 ›› 2015, Vol. 36 ›› Issue (4): 66-69.

• 组织和性能 • 上一篇

690 MPa高强度海洋工程用钢1 000 ~ 1100 ℃热变形行为

帅勇^1,2，孙乐飞²，陈英俊²

1中国钢研科技集团有限公司，北京100081 ；
2新余钢铁集团有限公司，新余338001

收稿日期:2015-03-15 出版日期:2015-08-01 发布日期:2022-08-26
作者简介:帅勇(1983-),男，博士研究生(钢铁研究总院),2006年安徽工业大学(本科)毕业,连铸工艺技术、铸坯质量及遗传性格研究。

Thermal Deformation Behavior of 690 MPa High-Strength Steel for Ocean Engineering at 1 000 ~ 1100 ℃

Shuai Yong^1,2, Sun Lefei² ， Chen Yingjun²

1 China Iron and Steel Research Institute Group Co Ltd, Beijing 100081 ；
2 Xinyu Iron and Steel Group Co Ltd, Xinyu 338001

Received:2015-03-15 Published:2015-08-01 Online:2022-08-26

摘要/Abstract

摘要： 通过Gleeble 3800热模拟机试验研究了690 MPa高强度海洋工程用钢(/%:0.12~0.15C,1.05~1.20Mn,0.5~0.7Cr,1.0~2.0Ni,0.5~0.6Mo,0.3~0.6Cu,0.015~0.035Nb,0.008~0.020Ti,0.04~0.07Alt)420mm连铸板坯,在1 000~1 100℃,20%形变量,应变速率0.05~5 s^-1时的热变形行为,得出该钢真应力-应变曲线,应变硬化率-变形曲线、热变形本构方程和动态再结晶热激活能。结果表明,在同一试验温度下,随着应变速率的增加,变形应力相应的增加;而随着变形温度的增加,变形应力相应的降低;该试验钢的动态再结晶激活能为499 954.0 J/mol。

Abstract: The thermal deformation behavior of 420 mm casting slab of 690 MPa high-strength steel for ocean engineering (/% ：0. 12 〜0. 15C,1.05 ~ 1.20Mn,0.5 ~0. 7Cr, 1. 0 ~ 2.0Ni,0. 5 ~0. 6Mo,0. 3 ~0. 6Cu,0.015 〜0.035Nb, 0. 008 〜0. 020Ti ,0. 04 ~0. 07Alt) with 20% deformation and strain rate 0. 05 ~ 5 s^-1 at 1 000 ~ 1 100 ℃ has been tested studied by using Gleeble 3800 thermal simulation machine to get true stress-strain curves, strain-hardening rate-deformation stress curves, thermal deformation constitution equation and dynamic recrystallization thermal activation energy of the steel. Results show that at same test temperature with increasing strain rate the corresponding deformation stress increases ； while with increasing deformation temperature the deformation stress decreases ； and the dynamic recrystallization thermal activation energy of the steel is 499 954. 0 J/mol.

Key words: 690 MPa High-Strength Steel for Ocean Engineering, Thermal Deformation at 1 000 ?1 100 ℃ , , Strain Rate, Stress-Strain, Dynamic Recrystallization

帅勇, 孙乐飞, 陈英俊. 690 MPa高强度海洋工程用钢1 000 ~ 1100 ℃热变形行为[J]. 特殊钢, 2015, 36(4): 66-69.

Shuai Yong, Sun Lefei , Chen Yingjun. Thermal Deformation Behavior of 690 MPa High-Strength Steel for Ocean Engineering at 1 000 ~ 1100 ℃[J]. Special Steel, 2015, 36(4): 66-69.

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690 MPa高强度海洋工程用钢1 000 ~ 1100 ℃热变形行为

Thermal Deformation Behavior of 690 MPa High-Strength Steel for Ocean Engineering at 1 000 ~ 1100 ℃

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