[1]田晨超,许 飞,焦 磊,等.加热温度对X80钢级热煨弯管组织性能的影响[J].焊管,2014,37(6):11-16.[doi:1001-3938(2014)06-0011-06]
 TIAN Chenchao,XU Fei,JIAO Lei,et al.Effects of Heating Temperature on Microstructures and Properties of X80 Grade Hot-bending Bends[J].,2014,37(6):11-16.[doi:1001-3938(2014)06-0011-06]
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加热温度对X80钢级热煨弯管组织性能的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
37
期数:
2014年第6期
页码:
11-16
栏目:
试验与研究
出版日期:
2014-06-28

文章信息/Info

Title:
Effects of Heating Temperature on Microstructures and Properties
of X80 Grade Hot-bending Bends
文章编号:
1001-3938(2014)06-0011-06
作者:
田晨超1许 飞1焦 磊1张 娟1张骁勇2
(1. 西北有色金属研究院,西安 710016;
2. 西安石油大学 材料科学与工程学院,西安710065)
Author(s):
TIAN Chenchao1 XU Fei1 JIAO Lei1 ZHANG Juan1 ZHANG Xiaoyong2
(1. Northwest Institute of Nonferrous Metal Research, Xi’an 710016, China;
2. School of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China)
关键词:
X80钢级热煨弯管加热温度组织性能
Keywords:
X80 grade heating bending heating temperature microstructure property
分类号:
TE113.12
DOI:
1001-3938(2014)06-0011-06
文献标志码:
A
摘要:
采用热模拟试验方法、力学性能测试技术及显微分析技术研究了加热温度对X80钢级热煨弯管组织性能的影响规律。结果表明,随着加热温度的升高,X80热煨弯管强度升高,塑韧性降低。加热温度为950 ℃时,组织形态以粒状贝氏体及贝氏体铁素体为主,辅之少量的软相组织,其优良强韧性的获得归因于细小的有效晶粒尺寸及多相分布的混杂组织单元;加热温度高于1 050 ℃时,横贯奥氏体晶界的粗大贝氏体铁素体板条结构的存在可导致韧性的严重恶化;处于两相区加热温度为850 ℃时,多边形铁素体的存在不利于强度水平的提高。
Abstract:
The effects of heating temperature on microstructures and properties of X80 grade heating bending were studied through thermal simulation, mechanical property test and microscopic analysis. The results showed that the strength of X80 grade hot-bending bends increases while plasticity and toughness decrease with the heating temperature increasing. When the heating temperature is 950 ℃, the microstructures of the experimental steel mainly consist of granular bainite and bainitic ferrite, including some soft-plastic mixture microstructure, and a better combination of strength and toughness can be obtained due to the fine effective grains and the mixed multiphase microstructure. The coarse BF laths traversing the austenite grain boundary can lead to a severe deterioration of the toughness when heating temperature is above 1 050 ℃. The PF is not in favor of the strength improvement when heated at 850 ℃ in the two-phase region.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目:国家自然科学基金资助项目(51174165);陕西省教育厅项目(11JK0803)。
收稿日期:2014-03-01
作者简介:田晨超(1986—),男,陕西富平人,助理工程师,现主要从事金属材料的检测分析工作。
更新日期/Last Update: