Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons
This paper presents the results of laboratory tests related to high-alloy silicon cast iron (HSCI). These materials are corrosion-resistant and commonly used in cathodic protection systems as protective electrodes. Due to their high fragility, alloys with increased Si content are not suitable for pr...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-06-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/7/1033 |
| _version_ | 1797589771238768640 |
|---|---|
| author | Marcin Stawarz |
| author_facet | Marcin Stawarz |
| author_sort | Marcin Stawarz |
| collection | DOAJ |
| description | This paper presents the results of laboratory tests related to high-alloy silicon cast iron (HSCI). These materials are corrosion-resistant and commonly used in cathodic protection systems as protective electrodes. Due to their high fragility, alloys with increased Si content are not suitable for producing elements exposed to dynamic loads. This paper analyzes the crystallization process of silicon alloys (with Si content between 23% and 25%) using thermal and derivation analysis methods. The tests also included an extended analysis of chemical composition. The metallographic tests included scanning electron microscopy with an EDS system, and the phase composition was determined using X-ray diffraction. As a result of the tests, the warp components were identified, the primary share of which are intermetallic phases of the Fe<sub>5</sub>Si<sub>3</sub> type. Moreover, single silicon crystals were found. The test results allowed for clarification of the temperature range of the transition of the Fe<sub>2</sub>Si phase into the Fe<sub>5</sub>Si<sub>3</sub> phase and the determination of characteristic points of the crystallization process (T<sub>Solidus</sub> i T<sub>Liquidus</sub>). Furthermore, bifilm-type inclusions were identified in the alloys. We also managed to present the silicon crystals and Fe<sub>5</sub>Si<sub>3</sub> phases in a spatial layout via observation of the surfaces of contraction cavities using scanning electron microscopy. |
| first_indexed | 2024-03-11T01:11:11Z |
| format | Article |
| id | doaj.art-e4886100e54a4ff6bbe67379448fec03 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T01:11:11Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-e4886100e54a4ff6bbe67379448fec032023-11-18T18:53:28ZengMDPI AGCrystals2073-43522023-06-01137103310.3390/cryst13071033Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast IronsMarcin Stawarz0Department of Foundry Engineering, Faculty of Mechanical Engineering, Silesian University of Technology, 7 Towarowa Street, 44-100 Gliwice, PolandThis paper presents the results of laboratory tests related to high-alloy silicon cast iron (HSCI). These materials are corrosion-resistant and commonly used in cathodic protection systems as protective electrodes. Due to their high fragility, alloys with increased Si content are not suitable for producing elements exposed to dynamic loads. This paper analyzes the crystallization process of silicon alloys (with Si content between 23% and 25%) using thermal and derivation analysis methods. The tests also included an extended analysis of chemical composition. The metallographic tests included scanning electron microscopy with an EDS system, and the phase composition was determined using X-ray diffraction. As a result of the tests, the warp components were identified, the primary share of which are intermetallic phases of the Fe<sub>5</sub>Si<sub>3</sub> type. Moreover, single silicon crystals were found. The test results allowed for clarification of the temperature range of the transition of the Fe<sub>2</sub>Si phase into the Fe<sub>5</sub>Si<sub>3</sub> phase and the determination of characteristic points of the crystallization process (T<sub>Solidus</sub> i T<sub>Liquidus</sub>). Furthermore, bifilm-type inclusions were identified in the alloys. We also managed to present the silicon crystals and Fe<sub>5</sub>Si<sub>3</sub> phases in a spatial layout via observation of the surfaces of contraction cavities using scanning electron microscopy.https://www.mdpi.com/2073-4352/13/7/1033intermetallic phasesFe<sub>2</sub>SiFe<sub>5</sub>Si<sub>3</sub>alloyed cast ironbifilms |
| spellingShingle | Marcin Stawarz Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons Crystals intermetallic phases Fe<sub>2</sub>Si Fe<sub>5</sub>Si<sub>3</sub> alloyed cast iron bifilms |
| title | Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons |
| title_full | Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons |
| title_fullStr | Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons |
| title_full_unstemmed | Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons |
| title_short | Crystallization of Intermetallic Phases Fe<sub>2</sub>Si, Fe<sub>5</sub>Si<sub>3</sub> for High Alloyed Cast Irons |
| title_sort | crystallization of intermetallic phases fe sub 2 sub si fe sub 5 sub si sub 3 sub for high alloyed cast irons |
| topic | intermetallic phases Fe<sub>2</sub>Si Fe<sub>5</sub>Si<sub>3</sub> alloyed cast iron bifilms |
| url | https://www.mdpi.com/2073-4352/13/7/1033 |
| work_keys_str_mv | AT marcinstawarz crystallizationofintermetallicphasesfesub2subsifesub5subsisub3subforhighalloyedcastirons |