[1]趙紅波,等.焊接熱輸入對厚壁X80管線鋼粗晶熱影響區組織及性能的影響[J].焊管,2017,40(9):6-10.[doi:10.19291/j.cnki.1001-3938.2017.09.002]
 ZHAO Hongbo,BI Zongyue,et al.Influence of Welding Heat Input on Coarse Grain Heat Affect Zone Microstructure and Properties of Thick Wall X80 Pipleline Steel[J].,2017,40(9):6-10.[doi:10.19291/j.cnki.1001-3938.2017.09.002]
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焊接熱輸入對厚壁X80管線鋼
粗晶熱影響區組織及性能的影響
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
40
期數:
2017年第9期
頁碼:
6-10
欄目:
試驗與研究
出版日期:
2017-09-28

文章信息/Info

Title:
Influence of Welding Heat Input on Coarse Grain Heat Affect Zone Microstructure
and Properties of Thick Wall X80 Pipleline Steel
文章編號:
10.19291/j.cnki.1001-3938.2017.09.002
作者:
趙紅波1 2畢宗岳1 2牛 輝1 2包志剛1 2付宏強1 2
1. 國家石油天然氣管材工程技術研究中心, 陜西 寶雞 721008;
2. 寶雞石油鋼管有限責任公司 鋼管研究院, 陜西 寶雞 721008
Author(s):
ZHAO Hongbo1 2 BI Zongyue1 2 NIU Hui1 2 BAO Zhigang1 2 FU Hongqiang1 2
1. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods,Baoji 721008,Shaanxi,China;
2. Steel Pipe Research Institute,Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008,Shaanxi,China
關鍵詞:
焊接X80管線鋼厚壁熱輸入熱影響區顯微組織力學性能
Keywords:
weldingX80pipeline steelthick wallheat inputheat affected zonemicrostructuremechanical properties
分類號:
TG407
DOI:
10.19291/j.cnki.1001-3938.2017.09.002
文獻標志碼:
B
摘要:
為了研究焊接熱輸入對X80管線鋼粗晶熱影響區的組織及性能影響,采用熱模擬技術,對不同焊接熱輸入下X80管線鋼的力學性能與顯微組織進行了研究和分析。研究結果表明,在不同熱輸入量下厚壁X80管線鋼粗晶熱影響區組織為板條貝氏體、粒狀貝氏體及M-A島組織。當熱輸入量小于25 kJ/mm時,粗晶熱影響區組織以貝氏體板條為主,沖擊韌性最佳,但硬度較高;當熱輸入量在25 kJ/mm時,試驗鋼粗晶熱影響區組織為板條貝氏體與粒狀貝氏體,沖擊韌性較高,且硬度適中;隨著熱輸入的增大,粗晶熱影響區中的粒狀貝氏體變得極為粗大,同時,M-A形態與分布發生急劇變化,粗晶熱影響區出現嚴重軟化,沖擊韌性值明顯下降。
Abstract:
In order to study the influence of welding heat input on microstructure and properties of X80 thick wall pipeline steel coarse grain heat affected zone, it adopted the thermal simulation technology to investigate and analyze the mechanical properties and microstructure of X80 pipeline steel. The results indicated that the microstructure of X80 pipeline steel coarse grain heat affected zone compose of lath bainitic, granular bainite and M-A. When the heat input is less than 25 kJ/mm, the coarse grain heat affected zone mainly compose of lath bainitic, the impact toughness is optimum, but the hardenability is moderate; when the heat input is greater than 25 kJ/mm, the coarse grain heat affected zone mainly compose of lath bainitic and granular bainite, the impact toughness is higher, and the hardness moderate; with the increase of heat input, the granular bainite of coarse grain heat affected zone becomes very bulky, at the same time, the form and distribution of M-A structure rapidly change, the serious softening appear in coarse grain heat affected zone, the impact toughness values dropped to the lowest.

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備注/Memo

備注/Memo:

收稿日期: 2017-05-10
修改稿收稿日期: 2017-08-10

作者簡介: 趙紅波(1981—), 男, 工程師, 目前主要從事石油天然氣管線鋼用焊接材料及工藝研究, 發表論文10余篇。

更新日期/Last Update: 2017-12-11
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