多次热循环对SUMITEN 950-TMCP高强钢韧性的影响

华电技术 ›› 2013, Vol. 35 ›› Issue (2): 18-20.

多次热循环对SUMITEN 950-TMCP高强钢韧性的影响

雷清华

华电郑州机械设计研究院有限公司，河南郑州 450015

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-02-25

Influence of repeatedly thermal cycling on toughness of SUMITEN 950-TMCP highstrength steel

LEI Qinghua

Huadian Zhengzhou Mechanical Design Institute Company Limited, Zhengzhou 450015, China

Received:1900-01-01 Revised:1900-01-01 Published:2013-02-25

摘要/Abstract

摘要： 介绍了SUMITEN 950-TMCP高强钢的热模拟试验过程，验证了试验数据，明确了二次热循环对该类钢材焊接粗晶区韧性的改善作用，依此提出在施工中采用多层多道焊的必要性。材料试验后，得出了三次热循环对改善焊接接头粗晶区的韧性作用不明显的结论。

关键词: 高强钢, 粗晶区, 热模拟, 二次热循环

Abstract: The thermal simulation experiment process of SUMITEN 950-TMCP highstrength steel was introduced. The experiment data were verified. It was clear that the second thermal cycle has the function to improve the toughness of the welded coarse grained region of this type steel. According to this, the necessity to adopt the multiplayer and multipass welding in construction was proposed. Based on material test result, a conclusion was obtained that third time thermal cycle has not obvious function to improve the toughness of the coarse grained region in welded joints of the material.

Key words: high-strength steel, coarse grained region, thermal simulation, second thermal cycle

雷清华. 多次热循环对SUMITEN 950-TMCP高强钢韧性的影响[J]. 华电技术, 2013, 35(2): 18-20.

LEI Qinghua. Influence of repeatedly thermal cycling on toughness of SUMITEN 950-TMCP highstrength steel[J]. Huadian Technology, 2013, 35(2): 18-20.

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