[1]卢华涛,药晓江,徐志刚,等.海上钻具硬连接堵头应力腐蚀断裂失效分析[J].常州大学学报(自然科学版),2022,34(03):12-18.[doi:10.3969/j.issn.2095-0411.2022.03.003]
　LU Huatao,YAO Xiaojiang,XU Zhigang,et al.Stress Corrosion Cracking Failure Analysis of Offshore Drilling Tool's “Hard-Connection” Plug[J].Journal of Changzhou University(Natural Science Edition),2022,34(03):12-18.[doi:10.3969/j.issn.2095-0411.2022.03.003]
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海上钻具硬连接堵头应力腐蚀断裂失效分析()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第34卷
期数:
2022年03期
页码:
12-18
栏目:
特约稿
出版日期:
2022-05-28

文章信息/Info

Title:
Stress Corrosion Cracking Failure Analysis of Offshore Drilling Tool's “Hard-Connection” Plug
文章编号:
2095-0411(2022)03-0012-07
作者:
卢华涛1; 药晓江1; 徐志刚2; 杨中娜2; 杨阳2; 王海朋2
(1.中海油田服务股份有限公司,河北廊坊065000;2.中海油(天津)管道工程技术有限公司,天津300452)
Author(s):
LU Huatao1;  YAO Xiaojiang1;  XU Zhigang2;  YANG Zhongna2;  YANG Yang2;  WANG Haipeng2
(1.China Oilfield Services Limited, Langfang 065000, China; 2.CNOOC(Tianjin)Pipeline Engineering Technology Co., Ltd., Tianjin 300452, China)
关键词:
海上钻具;  铍青铜C17200;  应力腐蚀断裂;  过时效;  异常组织;  晶界反应;  应力集中
Keywords:
drilling tool in offshore oilfield;  C17200 beryllium bronze;  stress corrosion fracture;  overaging;  abnormal microstructure;  grain boundary reaction;  stress concentration
分类号:
TG 146.1
DOI:
10.3969/j.issn.2095-0411.2022.03.003
文献标志码:
A
摘要:
某海上作业平台发生一起钻井工具硬连接堵头断裂失效故障,故障共涉及到铍青铜六方螺母和高温合金外壳的断裂,查找肇事件、确定失效模式和失效机理是研究的重点。通过开展断口宏观分析、微观形貌观察及能谱微区分析、显微组织、显微硬度测定等试验,确定出六方螺母因应力腐蚀断裂成为肇事件,并连带外壳一次性韧性断裂。铍青铜材料过时效处理,导致组织异常,力学性能降低,是造成六方螺母发生应力腐蚀断裂的主要原因,而内表面腐蚀坑和加工刀痕形成的应力集中均是应力腐蚀断裂的诱发因素。
Abstract:
A “hard-connection” plug of drilling tool fractured on an offshore operation platform, which involved the fracture of beryllium bronze hexagonal nut and superalloy shell. This paper focuses on finding out the first broken piece,the failure mode and failure mechanism.Through the macro analysis of fracture, observation of micro morphology and EDS, microstructure and microhardness measurement,it is determined that the fracture of beryllium bronze hexagonal nut is caused by stress corrosion fracture and it causes one-time ductile fracture of the shell.The abnormal structure of beryllium bronze hexagonal nut,which caused by overaging heat treatment,leads to grain boundary reaction and reduces the mechanical properties of the material. It is the main reason for the stress corrosion fracture of hexagonal nut.The corrosion pit on the inner surface of hexagonal nut and stress concentration formed by machining knife mark are the inducing factors of stress corrosion fracture.

参考文献/References:

[1]曹迪, 王宇鑫, 高伟东, 等. 铍青铜材料的加工工艺研究进展[J]. 金属功能材料, 2018, 25(4): 35-40.
[2]杨中娜, 杨阳, 徐志刚,等. 激光熔覆对C17200铍青铜钻具组织和性能的影响[C]. 北京: [s.n.], 2021.
[3]李炯辉. 金属材料金相图谱[M]. 北京: 机械工业出版社, 2006: 1494-1495.
[4]叶国庭. 热处理工艺及镀层对铍青铜组织与性能的影响[J]. 金属热处理, 1986, 11(12): 7-14.
[5]武婧亭, 赵斌, 韩岷, 等. 时效工艺对铍青铜薄板弹性元件显微组织和力学性能的影响分析[J]. 航天制造技术, 2020(5): 27-29.
[6]王晶莉, 岳丽娟, 闫永, 等. 低温时效对QBe2.0铍青铜组织与性能的影响[J]. 有色金属科学与工程, 2018, 9(3): 17-21.
[7]绳小龙, 魏巍, 周红琴,等. QBe2铍青铜弹簧片断裂原因分析及改进[C]. 北京: [s.n.], 2013.

备注/Memo

备注/Memo:
收稿日期: 2021-11-25。
作者简介: 卢华涛(1981—), 男, 湖北应城人, 硕士, 教授。通信联系人: 杨中娜(1985—), E-mail:yangzhn@cnooc.com.cn
更新日期/Last Update: 1900-01-01