[1]方 伟,邹 斌,李为卫,等.K65(X80)管线钢断口分离及其对冲击韧性的影响[J].焊管,2018,41(2):65-68.[doi:10.19291/j.cnki.1001-3938.2018.02.015]
 Edited and Translated by FANG Wei,ZOU Bin,LI Weiwei,et al.Separations and Their Contribution into the Impact Toughness of Pipeline Steels of Strength Class K65 (X80)[J].,2018,41(2):65-68.[doi:10.19291/j.cnki.1001-3938.2018.02.015]
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K65(X80)管线钢断口分离
及其对冲击韧性的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
41
期数:
2018年第2期
页码:
65-68
栏目:
国外焊管
出版日期:
2018-02-28

文章信息/Info

Title:
Separations and Their Contribution into the Impact Toughness of
Pipeline Steels of Strength Class K65 (X80)
文章编号:
10.19291/j.cnki.1001-3938.2018.02.015
作者:
方 伟1邹 斌2李为卫1吕 华1 编译
1. 中国石油集团石油管工程技术研究院, 西安 710077;
2. 中国石油西部管道分公司, 乌鲁木齐 830013
Author(s):
Edited and Translated by FANG Wei1 ZOU Bin2 LI Weiwei1 LYU Hua1
1. CNPC Tubular Goods Research Institute, Xi’an 710077, China;
2. Petrochina West Pipeline Company, Urumqi 830013, China
关键词:
断口分离X80钢冲击韧性断口表面夏比转变曲线
Keywords:
separations X80 impact toughness fracture surface charpy transition curve
分类号:
TG115.5
DOI:
10.19291/j.cnki.1001-3938.2018.02.015
文献标志码:
B
摘要:
为了研究K65(X80)钢断口分离对冲击韧性的影响,对不同生产厂家的4种典型K65(X80)高韧性管线钢进行了+20~-90 ℃夏比冲击试验,并对冲击试样断口分离形貌和尺寸进行了分析。结果表明,均匀韧性断口的高能量区长度Lh与冲击韧性AkV直接相关,考虑了试验温度下降时断口分离形式和数量的变化,确定了管线钢获得高冲击韧性(-60 ℃ AkV≥250 J/cm2)的条件。
Abstract:
The contribution of separations into the impact toughness of steels of strength class X80 is studied. Tests for impact bending are preformed in the range from +20 to -90 °C, and analysis of fracture surfaces of charpy specimens is performed. It is shown that the length Lh of the high-energy zone of homogeneous ductile fracture is directly correlated with the level of the impact toughness AkV. The evolution of the form and number of separations upon lowering of the test temperature is considered. The conditions of attainment of a high level of impact toughness(-60 ℃ AkV≥250 J/cm2) are determined.

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备注/Memo

备注/Memo:

收稿日期: 2017-11-06

基金项目: 质检公益性行业科研专项“桥梁缆索用钢等 23 项国际标准研制”(项目编号201510205-03); 中国石油天然气股份公司科学研究项目“X80 钢级在役天然气管道本质安全相关技术研究”(项目编号2016B-3106)。
作者简介: 方 伟(1968—), 女, 高级工程师, 硕士, 主要从事石油管材的标准化工作。

更新日期/Last Update: 2018-03-23