Intermetallic phase kinetic formation and thermal crack development in galvanized DCI
A new class of material characterized by mechanical properties close to the traditional low and medium carbon steel is the Ductile Cast Irons (DCIs). High castability and low production costs allow them to be used in many fields, ranging from automotive to piping. In this class of iron-based alloy t...
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Gruppo Italiano Frattura
2019-04-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2436/2493 |
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| author | Costanzo Bellini Francesco Carlino |
| author_facet | Costanzo Bellini Francesco Carlino |
| author_sort | Costanzo Bellini |
| collection | DOAJ |
| description | A new class of material characterized by mechanical properties close to the traditional low and medium carbon steel is the Ductile Cast Irons (DCIs). High castability and low production costs allow them to be used in many fields, ranging from automotive to piping. In this class of iron-based alloy the content of carbon is mainly localized in the graphite nodules, which are dispersed in a metallic matrix characterized by different phases: ferrite, austenite, pearlite, martensite or their mix, depending on the chemical composition and the heat treatment. Metallic matrix is subjected to the corrosion phenomenon, and, for this reason, the study and the development of traditional and innovative protection techniques are important, mainly in critical applications. Hot dip galvanizing is one of the investigated protections because the zinc is able to protect the iron-based alloys thanks to the reduction potential that is lower than the iron one. In this work, a ferritic-pearlitic DCI (GS500) is galvanized by using a pure Zn bath at 440�C in order to generate a zinc coating at different dipping time. The presence of thermal cracks is observed by means of a Scanning Electron Microscope (SEM). |
| format | Article |
| id | doaj-art-0b9fd49f3c8f4cb3beb2f6e984b2bf34 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-04-01 |
| publisher | Gruppo Italiano Frattura |
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| series | Fracture and Structural Integrity |
| spelling | doaj-art-0b9fd49f3c8f4cb3beb2f6e984b2bf342025-01-02T20:54:04ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-04-01134874074710.3221/IGF-ESIS.48.6710.3221/IGF-ESIS.48.67Intermetallic phase kinetic formation and thermal crack development in galvanized DCICostanzo BelliniFrancesco CarlinoA new class of material characterized by mechanical properties close to the traditional low and medium carbon steel is the Ductile Cast Irons (DCIs). High castability and low production costs allow them to be used in many fields, ranging from automotive to piping. In this class of iron-based alloy the content of carbon is mainly localized in the graphite nodules, which are dispersed in a metallic matrix characterized by different phases: ferrite, austenite, pearlite, martensite or their mix, depending on the chemical composition and the heat treatment. Metallic matrix is subjected to the corrosion phenomenon, and, for this reason, the study and the development of traditional and innovative protection techniques are important, mainly in critical applications. Hot dip galvanizing is one of the investigated protections because the zinc is able to protect the iron-based alloys thanks to the reduction potential that is lower than the iron one. In this work, a ferritic-pearlitic DCI (GS500) is galvanized by using a pure Zn bath at 440�C in order to generate a zinc coating at different dipping time. The presence of thermal cracks is observed by means of a Scanning Electron Microscope (SEM).https://www.fracturae.com/index.php/fis/article/view/2436/2493Hot Dip GalvanizingDuctile Cast IronDamageStress field |
| spellingShingle | Costanzo Bellini Francesco Carlino Intermetallic phase kinetic formation and thermal crack development in galvanized DCI Fracture and Structural Integrity Hot Dip Galvanizing Ductile Cast Iron Damage Stress field |
| title | Intermetallic phase kinetic formation and thermal crack development in galvanized DCI |
| title_full | Intermetallic phase kinetic formation and thermal crack development in galvanized DCI |
| title_fullStr | Intermetallic phase kinetic formation and thermal crack development in galvanized DCI |
| title_full_unstemmed | Intermetallic phase kinetic formation and thermal crack development in galvanized DCI |
| title_short | Intermetallic phase kinetic formation and thermal crack development in galvanized DCI |
| title_sort | intermetallic phase kinetic formation and thermal crack development in galvanized dci |
| topic | Hot Dip Galvanizing Ductile Cast Iron Damage Stress field |
| url | https://www.fracturae.com/index.php/fis/article/view/2436/2493 |
| work_keys_str_mv | AT costanzobellini intermetallicphasekineticformationandthermalcrackdevelopmentingalvanizeddci AT francescocarlino intermetallicphasekineticformationandthermalcrackdevelopmentingalvanizeddci |