| X100管线钢在预应变中的脆化 |
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| 引用本文： | 彭 涛,程时遐,吉玲康,张骁勇,高惠临.X100管线钢在预应变中的脆化[J].管道技术与设备,2014(1):1-3. |
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| 作者姓名： | 彭 涛 程时遐 吉玲康 张骁勇 高惠临 |
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| 作者单位： | [1]西安石油大学材料科学与工程学院,陕西西安710065 [2]中国石油天然气集团公司石油管工程技术研究院,陕西西安710065 |
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| 基金项目： | 国家自然科学基金项目（51174165） |
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| 摘 要： | 管线钢的脆化是管道安全的一个突出问题。针对管道工程的要求，采用材料显微分析方法和力学性能测试等手段，对X100管线钢在预应变中的脆化规律进行了研究，为X100管线钢管的工程施工和安全服役提供试验依据。结果表明：随着预应变量的增大，强度和硬度增加，伸长率和韧性下降，使试验钢X100产生脆化。预应变形成的机理是管线钢位错亚结构的变化。
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| 关 键 词： | X100管线钢 预应变 脆化 |
Embrittlement of XIO0 Pipeline Steel during Pre-strain |
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| PENG Tao,CHENG Shi-xia,JI Lin-kang,ZHANG Xiao-yong,GAO Hui-lin.Embrittlement of XIO0 Pipeline Steel during Pre-strain[J].Pipeline Technique and Equipment,2014(1):1-3. |
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| Authors: | PENG Tao CHENG Shi-xia JI Lin-kang ZHANG Xiao-yong GAO Hui-lin |
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| Institution: | ＇ ( 1. School of Materials Science and Engineering, S3＇an Shiyou University, Xi＇an 710065, China; 2. Tubular Goods Research Center of CNPC, Xi＇an 710065, China) |
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| Abstract: | The embritflement of pipeline steel is a glaring problem for pipeline safety. According to the requirements of pipe- line engineering, the embrittlement law of X100 pipeline steel was studied during pre-strain through a microscopic analysis meth- od, mechanical property tests, ect. This law may provide a trial basis for the engineering construction and safe service of XIO0 pipeline steel. The results show that pre-strain results in embrittlement of X100. With the increase of strain, strength and hardness increase while elongation and toughness decrease. The formation mechanism of pre-strain embrittlement is the change of the dislo- cation substructure. |
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| Keywords: | X100 pipeline steel pre-strain embrittlement |
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