Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses
Several studies have been conducted on the fatigue behavior of copper and 7-3, and 6-4 brasses. However, there have been fewer studies on the fatigue behavior and fatigue crack growth (FCG) properties of free-cutting brass, primarily because emphasis has been placed on the development of lead-free f...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/21/7488 |
| _version_ | 1797467473278140416 |
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| author | Kenichi Masuda Sotomi Ishihara Noriyasu Oguma Minoru Ishiguro Yoshinori Sakamoto Mami Iwasaki |
| author_facet | Kenichi Masuda Sotomi Ishihara Noriyasu Oguma Minoru Ishiguro Yoshinori Sakamoto Mami Iwasaki |
| author_sort | Kenichi Masuda |
| collection | DOAJ |
| description | Several studies have been conducted on the fatigue behavior of copper and 7-3, and 6-4 brasses. However, there have been fewer studies on the fatigue behavior and fatigue crack growth (FCG) properties of free-cutting brass, primarily because emphasis has been placed on the development of lead-free free-cutting brass. In this study, fatigue experiments were performed in the atmosphere at room temperature using three types of free-cutting, two types of bismuth (Bi)-based (with different grain sizes), and lead (Pb)-based brasses. It was found that lead-free Bi-based free-cutting brass had approximately the same fatigue performance as that of Pb-based free-cutting brass. It was also clarified that the addition of Bi or Pb initiated fatigue cracks, and that the crack growth period occupied most of the fatigue life. Differences in the FCG behavior of the three free-cutting brasses were observed in the low Δ<i>K</i> range. The modified linear fracture mechanics parameter <i>M</i> was used to quantitatively analyze the fatigue life and FCG behavior (short surface cracks). A comparison between the calculated and experimental results showed that <i>M</i> was useful. |
| first_indexed | 2024-03-09T18:54:10Z |
| format | Article |
| id | doaj.art-c9ea8996b0834ce998a30bf0a402c537 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:54:10Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c9ea8996b0834ce998a30bf0a402c5372023-11-24T05:36:01ZengMDPI AGMaterials1996-19442022-10-011521748810.3390/ma15217488Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting BrassesKenichi Masuda0Sotomi Ishihara1Noriyasu Oguma2Minoru Ishiguro3Yoshinori Sakamoto4Mami Iwasaki5Department of Mechanical Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, JapanDepartment of Mechanical Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, JapanDepartment of Mechanical Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, JapanNational Institute of Technology, Toyama College, Toyama 939-8630, JapanNational Institute of Technology, Toyama College, Toyama 939-8630, JapanDepartment of Mechanical Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, JapanSeveral studies have been conducted on the fatigue behavior of copper and 7-3, and 6-4 brasses. However, there have been fewer studies on the fatigue behavior and fatigue crack growth (FCG) properties of free-cutting brass, primarily because emphasis has been placed on the development of lead-free free-cutting brass. In this study, fatigue experiments were performed in the atmosphere at room temperature using three types of free-cutting, two types of bismuth (Bi)-based (with different grain sizes), and lead (Pb)-based brasses. It was found that lead-free Bi-based free-cutting brass had approximately the same fatigue performance as that of Pb-based free-cutting brass. It was also clarified that the addition of Bi or Pb initiated fatigue cracks, and that the crack growth period occupied most of the fatigue life. Differences in the FCG behavior of the three free-cutting brasses were observed in the low Δ<i>K</i> range. The modified linear fracture mechanics parameter <i>M</i> was used to quantitatively analyze the fatigue life and FCG behavior (short surface cracks). A comparison between the calculated and experimental results showed that <i>M</i> was useful.https://www.mdpi.com/1996-1944/15/21/7488free-cutting brassfatigue lifefatigue crack initiationfatigue crack growthshort surface crackmodified linear fracture mechanics parameter |
| spellingShingle | Kenichi Masuda Sotomi Ishihara Noriyasu Oguma Minoru Ishiguro Yoshinori Sakamoto Mami Iwasaki Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses Materials free-cutting brass fatigue life fatigue crack initiation fatigue crack growth short surface crack modified linear fracture mechanics parameter |
| title | Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses |
| title_full | Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses |
| title_fullStr | Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses |
| title_full_unstemmed | Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses |
| title_short | Study on the Fatigue Crack Initiation and Growth Behavior in Bismuth- and Lead-Based Free-Cutting Brasses |
| title_sort | study on the fatigue crack initiation and growth behavior in bismuth and lead based free cutting brasses |
| topic | free-cutting brass fatigue life fatigue crack initiation fatigue crack growth short surface crack modified linear fracture mechanics parameter |
| url | https://www.mdpi.com/1996-1944/15/21/7488 |
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