A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height
The repair reinforcement height is an important parameter of repair welding, which may have a great influence on structural integrity. In this paper, the effects of repair welding reinforcement height on the microstructure, microhardness, residual stresses and stress corrosion cracking (SCC) behavio...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-05-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/13/11/2434 |
| _version_ | 1797567018460774400 |
|---|---|
| author | Xiaodong Hu Hao-Yong Jiang Yun Luo Qiang Jin Wei Peng Chun-Mei Yi |
| author_facet | Xiaodong Hu Hao-Yong Jiang Yun Luo Qiang Jin Wei Peng Chun-Mei Yi |
| author_sort | Xiaodong Hu |
| collection | DOAJ |
| description | The repair reinforcement height is an important parameter of repair welding, which may have a great influence on structural integrity. In this paper, the effects of repair welding reinforcement height on the microstructure, microhardness, residual stresses and stress corrosion cracking (SCC) behavior of a 304 stainless steel-repaired joint were investigated by experimentation and simulation. With an increase of the repair weld reinforcement height, the <i>δ</i> ferrite content in weld and fusion zone is obviously reduced, and the ferrite shape is gradually changed from the skeleton to the worm shape. With the increase of repair welding reinforcement height, the microhardness and residual stresses decrease gradually. The tensile strength and elongation for higher repair weld reinforcement height are larger than those with lower repair weld reinforcement height. The higher the repair weld reinforcement height, the harder it is for SCC to occur. The repair welding in 304 stainless steel is recommended to be repaired no more than two times. |
| first_indexed | 2024-03-10T19:35:39Z |
| format | Article |
| id | doaj.art-636681027f1a4c25aa5534c1243c4514 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:35:39Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-636681027f1a4c25aa5534c1243c45142023-11-20T01:44:31ZengMDPI AGMaterials1996-19442020-05-011311243410.3390/ma13112434A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement HeightXiaodong Hu0Hao-Yong Jiang1Yun Luo2Qiang Jin3Wei Peng4Chun-Mei Yi5College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao 266555, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao 266555, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao 266555, ChinaShandong Meiling Chemical Equipment Co., Ltd., Zibo 255430, ChinaThe repair reinforcement height is an important parameter of repair welding, which may have a great influence on structural integrity. In this paper, the effects of repair welding reinforcement height on the microstructure, microhardness, residual stresses and stress corrosion cracking (SCC) behavior of a 304 stainless steel-repaired joint were investigated by experimentation and simulation. With an increase of the repair weld reinforcement height, the <i>δ</i> ferrite content in weld and fusion zone is obviously reduced, and the ferrite shape is gradually changed from the skeleton to the worm shape. With the increase of repair welding reinforcement height, the microhardness and residual stresses decrease gradually. The tensile strength and elongation for higher repair weld reinforcement height are larger than those with lower repair weld reinforcement height. The higher the repair weld reinforcement height, the harder it is for SCC to occur. The repair welding in 304 stainless steel is recommended to be repaired no more than two times.https://www.mdpi.com/1996-1944/13/11/2434304 stainless steelrepair weldingreinforcement heightresidual stressesstress corrosion cracking |
| spellingShingle | Xiaodong Hu Hao-Yong Jiang Yun Luo Qiang Jin Wei Peng Chun-Mei Yi A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height Materials 304 stainless steel repair welding reinforcement height residual stresses stress corrosion cracking |
| title | A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height |
| title_full | A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height |
| title_fullStr | A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height |
| title_full_unstemmed | A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height |
| title_short | A Study on Microstructure, Residual Stresses and Stress Corrosion Cracking of Repair Welding on 304 Stainless Steel: Part II-Effects of Reinforcement Height |
| title_sort | study on microstructure residual stresses and stress corrosion cracking of repair welding on 304 stainless steel part ii effects of reinforcement height |
| topic | 304 stainless steel repair welding reinforcement height residual stresses stress corrosion cracking |
| url | https://www.mdpi.com/1996-1944/13/11/2434 |
| work_keys_str_mv | AT xiaodonghu astudyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT haoyongjiang astudyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT yunluo astudyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT qiangjin astudyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT weipeng astudyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT chunmeiyi astudyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT xiaodonghu studyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT haoyongjiang studyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT yunluo studyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT qiangjin studyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT weipeng studyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight AT chunmeiyi studyonmicrostructureresidualstressesandstresscorrosioncrackingofrepairweldingon304stainlesssteelpartiieffectsofreinforcementheight |