2024年4月10日发(作者:拜子菡)
FV520B不锈钢角焊缝接头的组织和断裂机理 1
FV520B不锈钢角焊缝接头的
组织和断裂机理
Microstructures and Fracture Mechanisms of
Fillet Welded Joints of FV5 20B Steel
樊俊铃,郭杏林,吴承伟
(3v连理工大学工程力学系工业装备结构分析国家
重点实验室,辽宁大连116024)
FAN J un—ling,GUO Xing—lin,WU Cheng—wei
(State Key Laboratory of Structural Analysis for Industrial
Equipment,Department of Engineering Mechanics,Dalian
University of Technology,Dalian 1 16024,Liaoning,China)
摘要:通过对焊接接头疲劳断口的观察研究,讨论了控制接头疲劳失效的疲劳机理。实验研究了焊接接头的母材、焊缝
及热影响区的微观组织形态。结果发现:母材组织为细小均匀的板条马氏体及弥散分布的第二相粒子,而焊缝区为粗大
的板条马氏体及少量的第二相颗粒。组织特征的区别证明母材综合力学性能优于焊缝。
关键词:疲劳;角焊缝接头;疲劳断口;马氏体;第二相粒子
doi:10.3969/j.issn.1001—4381.2013.07.001
中图分类号:TG405 文献标识码:A 文章编号:i001—4381(2013)07—0001—05
Abstract:The fatigue fracture surfaces of welded joints were observed and studied,and accordingly
the fatigue mechanisms,governing fatigue failure of welded joints,were discussed.The microstruc—
tures on the base metal,the weld seam and the heat—affected zone of welded j oints were investigated.
It is concluded that the microstructures on the base metal are fine tempered martensite and dispersed
secondary phase particles。whereas the ones on the weld seam are coarse lath martensite and few of
secondary phase particles.The differences between their microstructures confirm the better mechani—
cal properties of the base meta1.
Key words:fatigue;fillet welded j oint;fatigue fracture;martensite;secondary phase particle
焊接接头的疲劳性能的评估是工业装备和机械
设备设计及安全性评定过程中的必要环节。焊接工
艺可能在焊接构件中引入焊接杂质、未焊透、未熔
合、焊瘤、焊接裂纹等金属不连续、不致密或连续不
良的现象,导致焊接接头的局部组织和力学性能极
工艺特别敏感,樊俊铃等[4]通过对固溶+调整+时效
热处理前后FV520B不锈钢微观组织的研究发现,热
处理后FV520B钢的板条马氏体组织细小均匀,这增
加了晶粒数目,增大了晶界面积,加之基体中均匀弥散
分布的第二相颗粒,使得固溶+调整+时效处理后
不均匀,引起接头局部高度的应力集中,所以即使在
较低的交变应力水平作用下,焊接构件或焊接结构
依然会发生疲劳断裂I】]。
FV520B不锈钢是英国Firth—Vichers材料研究
所在原有FV520不锈钢的基础上开发的一种新型的
FV520B钢的抗拉伸性能和抗疲劳性能均得到了明显
的提高。焊接工艺往往会在焊接构件中引入较大的残
余应力,极大地降低了焊接构件的力学性能,谭朝鑫
通过实验发现焊后固溶化能消除焊接高温引起的残余
应力,改善FV520B钢接头的微观组织和力学性能。
低碳马氏体沉淀硬化不锈钢,具有易于加工、强度高,
韧性良好,耐腐蚀性优良和可焊性能好等优点,被广泛
用于齿轮、轴、叶片、转子、泵件等工业场合 J。
FV520B钢的强度、塑性和韧性等力学性能对热处理
刘万青 通过有限元建模分析、传统疲劳实验与热像
法疲劳实验对比研究了大型离心压缩机焊接叶轮材料
的疲劳性能,为叶轮设计提供了一些必要的参考数据。
Nowacki[7 通过实验研究发现时效温度变低能提高
长期储存后橡胶材料湿热老化分析
(3):1—7.
91
NASA Technical Paper,1996,(6):3226.
LI x T.Development of gas turbine and dilemma in China[J].
Aeroengine,2011,37(3):1—7.
M.Common threads for
[3]
B0NAFEDE A,RUSSOM D,DRISCOLL
[9] CYNTHIA L L.Effect of temperature and O—Ring gland finish on
sealing ability of Viton V747—75[R].NASA Technical Paper,
1993,(11):3391.
marine gas turbine engines in US Navy applicat10ns[R].ASME
GT一2007—28217.
[10] APREM A S,JOSE S,THOMAs S,et a1.Influence of hygro—
thermally degraded polyester—-urethane on physical and mechani—_
J.Marine gas turbine propulsion system applica—
[4]
BRICKNELL D
cal properties of chloroprene rubber[J].European Polymer Jour—
nal,2003,39:69—76.
tions[R].ASME GT一2006—90751.
[5] 郑铁军,张会奇,孟凡金.湿热环境下装甲装备封存方法应用研究
[J].装备环境工程,2010,7(4):93—96.
ZHENG T J,ZHANG H Q,MENG F J.Application research of
[¨]王大伟,李鹏,王中华.三元乙丙橡胶材料密封圈硬度对密封性
能的影响[J].液压气动与密封,2012,(10):52—53.
WANG D W,LI P,WANG Z H.EPDM material sealing ring
armored equipment seal methods for wet&hot environment[J].
Equipment Environmental Engineering,2010,7(4):93—96.
hardness on the influence of the sealing performance[J].Hy—
draulics Pneumatics&Seals,2012,(10):52—53.
[6]
黄琪,梁志杰,冯斌,等.装甲装备橡胶密封件抗老化封存膜的研
制EJ].包装工程,2009,30(9):58—66.
HUANG Q,LIANG Z J,FENG B,et a1.Development of anti—
[12] 常新龙,姜帆.高温一湿热环境下氟橡胶密封圈失效研究[J].装备
环境工程,2012,(1):23—28.
CHANG X L,JIANG F.Analysis of fluorine rubber ̄ring un—
aging coating for rubber parts of armored equipment[J].Packa—
ging Engineering,2009,30(9):58—66.
der high temperature and hygrothermal environment[J].Equip—
ment Environmental Engineering,2012,(1):23—28.
[7] 马明昭,郑震山.海军航空发动机腐蚀防护与控制工程设计[J].
航空维修与工程,2009,(4):53—55.
MA M Z,ZHENG Z S.Engineering design specifications of cor—
收稿日期:2013-02—27;修订日期:2013—05—10
作者简介:沈尔明(1977一),男,工程师,硕士,主要从事航空发动机的
非金属材料和复合材料的设计、应用与研究工作,联系地址:辽宁省沈
阳市428信箱55分箱(110015),E—mail:summoon945@126.corn
rosion prevention and control used in navy aircraft engine[J].A—
viation Maintenance&Engineering,2009,(4):53—55.
L L.Effect of temperature and gap opening rate on the
[8]
CYNTHIA
resiliency of candidate solid rocket booster O—Ring materials[R].
米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米
(上接第5页)
[3]FAN J I ,GUO X L,wU c W,et a1.Influence of heat treat—
[9]钟群鹏,赵子华.断口学[M].北京:高等教育出版社,2006.
rlO] FARABI N,CHEN D L,ZHOU Y.Microstructure and me—
chanical properties of laser welded dissimilar DP600/DP980 du—
ments on mechanical behavior of FV520B steel口/0L].Experi—
mental Techniques,2013,doi:10.1111/ext.12019.
al—Phase steel joints[J].Journal of Alloys and Compounds,
2011,509(3):982—989.
[4]樊俊铃,郭杏林,吴承伟,等.热处理对FV520B钢疲劳性能的
影响[J].材料研究学报,2012,26(1):61 67.
FAN J L,GU0 X L,WU C W,et a1.Effect of heat treatments
on fatigue properties of FV520B steel using infrared thermogra—
[11] CLARK A.Fatigue mechanisms in FV520B,a turbine blade
steel[D].Britain:Sheffield Hallam University,1999.
[12] WHITE D J.The fatigue strength of large single—pinned and
double—pinned connections made from alloy steel FV520B[J].
Proceedings of Institution of Mechanical Engineers,1968,183
(1):563—578.
phy[J].Chinese Journal of Materials Research,2012,26(1):61
67.
[5]谭朝鑫.FV520(B)不锈钢叶轮焊后热处理工艺探讨口].华中工
学院学报,1983,(增刊1):125—132.
TAN C X.Post—welding heat treatment of FV520(B)stainless
基金项目:国家自然科学基金资助项目(11072045);国家“973计划”资
助项目(2011CB706504)
steel impellers[J].Journal of Huazhong Institute of Technology,
1983,(S1):125—132.
收稿日期:2012—04—21;修订日期:2013-03—21
[6] 刘万青.大型离心压缩机焊接叶轮疲劳分析[D].大连:大连理
工大学,2008.
作者简介:樊俊铃(1985一),男,博士研究生,研究方向:材料性能、疲
劳断裂性能与可靠性分析,E—mail:fanjunling@mail.dlut.edu.cn
通讯作者:郭杏林(1955一),男,教授,博士生导师,研究方向:材料性
能、振动、无损检测等,联系地址:大连理工大学工程力学系工业装备结
构分析国家重点实验室(116024),E—mail:xlguo@dlut.edu.cn
[7]NOWACKI J.Weldability of 17-4PH stainless steel in centrifugal
compressor impeller applications[J].Journal of Materials Pro—
cessing Technology,2004,157—158(spec iss):578—583.
[8] International Institute of Welding.Fatigue Design of We1ded
Joints and Components[M].UK:Abington Publishing,1996.
2024年4月10日发(作者:拜子菡)
FV520B不锈钢角焊缝接头的组织和断裂机理 1
FV520B不锈钢角焊缝接头的
组织和断裂机理
Microstructures and Fracture Mechanisms of
Fillet Welded Joints of FV5 20B Steel
樊俊铃,郭杏林,吴承伟
(3v连理工大学工程力学系工业装备结构分析国家
重点实验室,辽宁大连116024)
FAN J un—ling,GUO Xing—lin,WU Cheng—wei
(State Key Laboratory of Structural Analysis for Industrial
Equipment,Department of Engineering Mechanics,Dalian
University of Technology,Dalian 1 16024,Liaoning,China)
摘要:通过对焊接接头疲劳断口的观察研究,讨论了控制接头疲劳失效的疲劳机理。实验研究了焊接接头的母材、焊缝
及热影响区的微观组织形态。结果发现:母材组织为细小均匀的板条马氏体及弥散分布的第二相粒子,而焊缝区为粗大
的板条马氏体及少量的第二相颗粒。组织特征的区别证明母材综合力学性能优于焊缝。
关键词:疲劳;角焊缝接头;疲劳断口;马氏体;第二相粒子
doi:10.3969/j.issn.1001—4381.2013.07.001
中图分类号:TG405 文献标识码:A 文章编号:i001—4381(2013)07—0001—05
Abstract:The fatigue fracture surfaces of welded joints were observed and studied,and accordingly
the fatigue mechanisms,governing fatigue failure of welded joints,were discussed.The microstruc—
tures on the base metal,the weld seam and the heat—affected zone of welded j oints were investigated.
It is concluded that the microstructures on the base metal are fine tempered martensite and dispersed
secondary phase particles。whereas the ones on the weld seam are coarse lath martensite and few of
secondary phase particles.The differences between their microstructures confirm the better mechani—
cal properties of the base meta1.
Key words:fatigue;fillet welded j oint;fatigue fracture;martensite;secondary phase particle
焊接接头的疲劳性能的评估是工业装备和机械
设备设计及安全性评定过程中的必要环节。焊接工
艺可能在焊接构件中引入焊接杂质、未焊透、未熔
合、焊瘤、焊接裂纹等金属不连续、不致密或连续不
良的现象,导致焊接接头的局部组织和力学性能极
工艺特别敏感,樊俊铃等[4]通过对固溶+调整+时效
热处理前后FV520B不锈钢微观组织的研究发现,热
处理后FV520B钢的板条马氏体组织细小均匀,这增
加了晶粒数目,增大了晶界面积,加之基体中均匀弥散
分布的第二相颗粒,使得固溶+调整+时效处理后
不均匀,引起接头局部高度的应力集中,所以即使在
较低的交变应力水平作用下,焊接构件或焊接结构
依然会发生疲劳断裂I】]。
FV520B不锈钢是英国Firth—Vichers材料研究
所在原有FV520不锈钢的基础上开发的一种新型的
FV520B钢的抗拉伸性能和抗疲劳性能均得到了明显
的提高。焊接工艺往往会在焊接构件中引入较大的残
余应力,极大地降低了焊接构件的力学性能,谭朝鑫
通过实验发现焊后固溶化能消除焊接高温引起的残余
应力,改善FV520B钢接头的微观组织和力学性能。
低碳马氏体沉淀硬化不锈钢,具有易于加工、强度高,
韧性良好,耐腐蚀性优良和可焊性能好等优点,被广泛
用于齿轮、轴、叶片、转子、泵件等工业场合 J。
FV520B钢的强度、塑性和韧性等力学性能对热处理
刘万青 通过有限元建模分析、传统疲劳实验与热像
法疲劳实验对比研究了大型离心压缩机焊接叶轮材料
的疲劳性能,为叶轮设计提供了一些必要的参考数据。
Nowacki[7 通过实验研究发现时效温度变低能提高
长期储存后橡胶材料湿热老化分析
(3):1—7.
91
NASA Technical Paper,1996,(6):3226.
LI x T.Development of gas turbine and dilemma in China[J].
Aeroengine,2011,37(3):1—7.
M.Common threads for
[3]
B0NAFEDE A,RUSSOM D,DRISCOLL
[9] CYNTHIA L L.Effect of temperature and O—Ring gland finish on
sealing ability of Viton V747—75[R].NASA Technical Paper,
1993,(11):3391.
marine gas turbine engines in US Navy applicat10ns[R].ASME
GT一2007—28217.
[10] APREM A S,JOSE S,THOMAs S,et a1.Influence of hygro—
thermally degraded polyester—-urethane on physical and mechani—_
J.Marine gas turbine propulsion system applica—
[4]
BRICKNELL D
cal properties of chloroprene rubber[J].European Polymer Jour—
nal,2003,39:69—76.
tions[R].ASME GT一2006—90751.
[5] 郑铁军,张会奇,孟凡金.湿热环境下装甲装备封存方法应用研究
[J].装备环境工程,2010,7(4):93—96.
ZHENG T J,ZHANG H Q,MENG F J.Application research of
[¨]王大伟,李鹏,王中华.三元乙丙橡胶材料密封圈硬度对密封性
能的影响[J].液压气动与密封,2012,(10):52—53.
WANG D W,LI P,WANG Z H.EPDM material sealing ring
armored equipment seal methods for wet&hot environment[J].
Equipment Environmental Engineering,2010,7(4):93—96.
hardness on the influence of the sealing performance[J].Hy—
draulics Pneumatics&Seals,2012,(10):52—53.
[6]
黄琪,梁志杰,冯斌,等.装甲装备橡胶密封件抗老化封存膜的研
制EJ].包装工程,2009,30(9):58—66.
HUANG Q,LIANG Z J,FENG B,et a1.Development of anti—
[12] 常新龙,姜帆.高温一湿热环境下氟橡胶密封圈失效研究[J].装备
环境工程,2012,(1):23—28.
CHANG X L,JIANG F.Analysis of fluorine rubber ̄ring un—
aging coating for rubber parts of armored equipment[J].Packa—
ging Engineering,2009,30(9):58—66.
der high temperature and hygrothermal environment[J].Equip—
ment Environmental Engineering,2012,(1):23—28.
[7] 马明昭,郑震山.海军航空发动机腐蚀防护与控制工程设计[J].
航空维修与工程,2009,(4):53—55.
MA M Z,ZHENG Z S.Engineering design specifications of cor—
收稿日期:2013-02—27;修订日期:2013—05—10
作者简介:沈尔明(1977一),男,工程师,硕士,主要从事航空发动机的
非金属材料和复合材料的设计、应用与研究工作,联系地址:辽宁省沈
阳市428信箱55分箱(110015),E—mail:summoon945@126.corn
rosion prevention and control used in navy aircraft engine[J].A—
viation Maintenance&Engineering,2009,(4):53—55.
L L.Effect of temperature and gap opening rate on the
[8]
CYNTHIA
resiliency of candidate solid rocket booster O—Ring materials[R].
米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米米
(上接第5页)
[3]FAN J I ,GUO X L,wU c W,et a1.Influence of heat treat—
[9]钟群鹏,赵子华.断口学[M].北京:高等教育出版社,2006.
rlO] FARABI N,CHEN D L,ZHOU Y.Microstructure and me—
chanical properties of laser welded dissimilar DP600/DP980 du—
ments on mechanical behavior of FV520B steel口/0L].Experi—
mental Techniques,2013,doi:10.1111/ext.12019.
al—Phase steel joints[J].Journal of Alloys and Compounds,
2011,509(3):982—989.
[4]樊俊铃,郭杏林,吴承伟,等.热处理对FV520B钢疲劳性能的
影响[J].材料研究学报,2012,26(1):61 67.
FAN J L,GU0 X L,WU C W,et a1.Effect of heat treatments
on fatigue properties of FV520B steel using infrared thermogra—
[11] CLARK A.Fatigue mechanisms in FV520B,a turbine blade
steel[D].Britain:Sheffield Hallam University,1999.
[12] WHITE D J.The fatigue strength of large single—pinned and
double—pinned connections made from alloy steel FV520B[J].
Proceedings of Institution of Mechanical Engineers,1968,183
(1):563—578.
phy[J].Chinese Journal of Materials Research,2012,26(1):61
67.
[5]谭朝鑫.FV520(B)不锈钢叶轮焊后热处理工艺探讨口].华中工
学院学报,1983,(增刊1):125—132.
TAN C X.Post—welding heat treatment of FV520(B)stainless
基金项目:国家自然科学基金资助项目(11072045);国家“973计划”资
助项目(2011CB706504)
steel impellers[J].Journal of Huazhong Institute of Technology,
1983,(S1):125—132.
收稿日期:2012—04—21;修订日期:2013-03—21
[6] 刘万青.大型离心压缩机焊接叶轮疲劳分析[D].大连:大连理
工大学,2008.
作者简介:樊俊铃(1985一),男,博士研究生,研究方向:材料性能、疲
劳断裂性能与可靠性分析,E—mail:fanjunling@mail.dlut.edu.cn
通讯作者:郭杏林(1955一),男,教授,博士生导师,研究方向:材料性
能、振动、无损检测等,联系地址:大连理工大学工程力学系工业装备结
构分析国家重点实验室(116024),E—mail:xlguo@dlut.edu.cn
[7]NOWACKI J.Weldability of 17-4PH stainless steel in centrifugal
compressor impeller applications[J].Journal of Materials Pro—
cessing Technology,2004,157—158(spec iss):578—583.
[8] International Institute of Welding.Fatigue Design of We1ded
Joints and Components[M].UK:Abington Publishing,1996.