Influence of heat input on microstructure and fracture toughness property in different zones of X80 pipeline steel weldments
In this paper, microstructure observations and mechanical behaviour of fusion line and offsetting positions from fusion line by 1, 2 and 3 mm were analysed. For the welding of X80 pipeline steel plates, different magnitudes of heat inputs such as high heat input (HHI) 25 kJ/cm, medium heat input (MH...
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| Veröffentlicht in: | Fatigue & fracture of engineering materials & structures 2021-01, Vol.44 (1), p.85-100 |
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| container_title | Fatigue & fracture of engineering materials & structures |
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| creator | Singh, Mayur Pratap Arora, Kanwer Singh Kumar, Rajneesh Shukla, Dinesh Kumar Siva Prasad, S. |
| description | In this paper, microstructure observations and mechanical behaviour of fusion line and offsetting positions from fusion line by 1, 2 and 3 mm were analysed. For the welding of X80 pipeline steel plates, different magnitudes of heat inputs such as high heat input (HHI) 25 kJ/cm, medium heat input (MHI) 20 kJ/cm and low heat input (LHI) 15 kJ/cm were employed. Critical values of J‐integral (J0.2) and crack tip opening displacement (CTOD0.2) for predetermined regions in the X80 weldment were determined as per ASTM‐E1820a. M‐A constituents of different sizes such as small (1–2 μm), large >2 μm and slender (>4 μm) were observed in the microstructure of subzones of weldments for different heat inputs. Formation of granular bainite, M‐A constituents and inclusions of Ti, Si, Mo in the microstructure impaired fracture toughness property. In the X80 weldment, the fusion line (FL) for HHI was found weakest in terms of fracture resistance, which subsequently increases the risk of fracture. |
| doi_str_mv | 10.1111/ffe.13333 |
| format | Article |
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For the welding of X80 pipeline steel plates, different magnitudes of heat inputs such as high heat input (HHI) 25 kJ/cm, medium heat input (MHI) 20 kJ/cm and low heat input (LHI) 15 kJ/cm were employed. Critical values of J‐integral (J0.2) and crack tip opening displacement (CTOD0.2) for predetermined regions in the X80 weldment were determined as per ASTM‐E1820a. M‐A constituents of different sizes such as small (1–2 μm), large >2 μm and slender (>4 μm) were observed in the microstructure of subzones of weldments for different heat inputs. Formation of granular bainite, M‐A constituents and inclusions of Ti, Si, Mo in the microstructure impaired fracture toughness property. 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For the welding of X80 pipeline steel plates, different magnitudes of heat inputs such as high heat input (HHI) 25 kJ/cm, medium heat input (MHI) 20 kJ/cm and low heat input (LHI) 15 kJ/cm were employed. Critical values of J‐integral (J0.2) and crack tip opening displacement (CTOD0.2) for predetermined regions in the X80 weldment were determined as per ASTM‐E1820a. M‐A constituents of different sizes such as small (1–2 μm), large >2 μm and slender (>4 μm) were observed in the microstructure of subzones of weldments for different heat inputs. Formation of granular bainite, M‐A constituents and inclusions of Ti, Si, Mo in the microstructure impaired fracture toughness property. In the X80 weldment, the fusion line (FL) for HHI was found weakest in terms of fracture resistance, which subsequently increases the risk of fracture.</description><subject>Bainite</subject><subject>Constituents</subject><subject>Crack opening displacement</subject><subject>Crack tips</subject><subject>Fracture toughness</subject><subject>HAZ</subject><subject>Heat treating</subject><subject>High strength low alloy steels</subject><subject>Inclusions</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Molybdenum</subject><subject>Steel plates</subject><subject>Structural steels</subject><subject>Titanium</subject><subject>welded joint</subject><subject>Weldments</subject><subject>X80 pipe line steel</subject><issn>8756-758X</issn><issn>1460-2695</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kM9LwzAUx4MoOKcH_4OAJw_dkqZN26OMTQcDLwq7hTR9cRldWpOUMfGPN7NefZfH433ej-8XoXtKZjTGXGuYURbjAk1oxkmS8iq_RJOyyHlS5OX2Gt14vyeE8oyxCfpeW90OYBXgTuMdyICN7YeAO4sPRrnOBzeoMDjA0jZYOzkWoRs-dha8x73renDhFOdwY-J9Bzbgry42zyu3JcG96aE1FrAPAC0-QtscIuRv0ZWWrYe7vzxF76vl2-Il2bw-rxdPm0SlVcGihJoUvKF5U3Omm4ywqqgzllfAK0UAeKlI0dCKS17XOSs5kyqTWpE69iDN2RQ9jHvjr58D-CD23eBsPCnSjHMazeBppB5H6qzaO9Cid-Yg3UlQIs7miihO_Job2fnIHk0Lp_9BsVotx4kf1et9aw</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Singh, Mayur Pratap</creator><creator>Arora, Kanwer Singh</creator><creator>Kumar, Rajneesh</creator><creator>Shukla, Dinesh Kumar</creator><creator>Siva Prasad, S.</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><orcidid>https://orcid.org/0000-0001-5081-6700</orcidid></search><sort><creationdate>202101</creationdate><title>Influence of heat input on microstructure and fracture toughness property in different zones of X80 pipeline steel weldments</title><author>Singh, Mayur Pratap ; Arora, Kanwer Singh ; Kumar, Rajneesh ; Shukla, Dinesh Kumar ; Siva Prasad, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2973-26b076d15db63fd40397b4359e69c0ee68c07d196a6bb53863ac4afc0bee6e253</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Bainite</topic><topic>Constituents</topic><topic>Crack opening displacement</topic><topic>Crack tips</topic><topic>Fracture toughness</topic><topic>HAZ</topic><topic>Heat treating</topic><topic>High strength low alloy steels</topic><topic>Inclusions</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Molybdenum</topic><topic>Steel plates</topic><topic>Structural steels</topic><topic>Titanium</topic><topic>welded joint</topic><topic>Weldments</topic><topic>X80 pipe line steel</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Singh, Mayur Pratap</creatorcontrib><creatorcontrib>Arora, Kanwer Singh</creatorcontrib><creatorcontrib>Kumar, Rajneesh</creatorcontrib><creatorcontrib>Shukla, Dinesh Kumar</creatorcontrib><creatorcontrib>Siva Prasad, S.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Fatigue & fracture of engineering materials & structures</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Singh, Mayur Pratap</au><au>Arora, Kanwer Singh</au><au>Kumar, Rajneesh</au><au>Shukla, Dinesh Kumar</au><au>Siva Prasad, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of heat input on microstructure and fracture toughness property in different zones of X80 pipeline steel weldments</atitle><jtitle>Fatigue & fracture of engineering materials & structures</jtitle><date>2021-01</date><risdate>2021</risdate><volume>44</volume><issue>1</issue><spage>85</spage><epage>100</epage><pages>85-100</pages><issn>8756-758X</issn><eissn>1460-2695</eissn><abstract>In this paper, microstructure observations and mechanical behaviour of fusion line and offsetting positions from fusion line by 1, 2 and 3 mm were analysed. For the welding of X80 pipeline steel plates, different magnitudes of heat inputs such as high heat input (HHI) 25 kJ/cm, medium heat input (MHI) 20 kJ/cm and low heat input (LHI) 15 kJ/cm were employed. Critical values of J‐integral (J0.2) and crack tip opening displacement (CTOD0.2) for predetermined regions in the X80 weldment were determined as per ASTM‐E1820a. M‐A constituents of different sizes such as small (1–2 μm), large >2 μm and slender (>4 μm) were observed in the microstructure of subzones of weldments for different heat inputs. Formation of granular bainite, M‐A constituents and inclusions of Ti, Si, Mo in the microstructure impaired fracture toughness property. 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| subjects | Bainite Constituents Crack opening displacement Crack tips Fracture toughness HAZ Heat treating High strength low alloy steels Inclusions Mechanical properties Microstructure Molybdenum Steel plates Structural steels Titanium welded joint Weldments X80 pipe line steel |
| title | Influence of heat input on microstructure and fracture toughness property in different zones of X80 pipeline steel weldments |
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