Kimstach T, U. K, Repyakh S, Mazorchuk V, Usenko R, Ivanova L
{"title":"Cu-Sn-Al系合金的物理和铸造性能","authors":"Kimstach T, U. K, Repyakh S, Mazorchuk V, Usenko R, Ivanova L","doi":"10.34185/tpm.6.2021.05","DOIUrl":null,"url":null,"abstract":"Tin-aluminum bronze containing Sn - up to 6.73% and Al - up to 7.53% (by weight) physical and\ncasting properties determination.\nMethodology. Melting has been carried out in graphitecrucible in induction furnace under charcoal layer. Alloys liquidus\nand solidus temperatures have been investigated by thermography results of solidifying melt. Free (С) and absolutely\ndifficult (АЗ) linear shrinkage values and alloy transition temperature from plastic to elastic state during cooling in mold\nhave been studied by conventional methods. Bronzes fluidity has been estimated by the spiral sample filled channel\nlength according to GOST 16438. Bronze BrO3A3 tendency to burn and to hot and cold cracks formation has been\nevaluated by samples surface visual examination results. Cast bronze specific density has been determined by calculation. Studied alloys mechanical properties have been calculated based on corresponding samples tests results at their\nimpact bending at room temperature in accordance with actual standards. Alloys chemical composition control has been\ncarried out on precision analyzer EXPERT 4L on specimens cut from club-shaped samples. Microstructural studies\nhave been performed on metallographic microscopic samples prepared by standard methods on optical microscope\nNeophot-21. Approximation reliability value and corresponding dependences have been built using EXEL computer program.\nResults.According to qualitative and quantitative indicators and system Cu-Sn-Al bronzes with Sn content up to 6.73%\nand Al content up to 7.53% physical and foundry properties assessments, it has been determined that among possible\ntin and aluminum content in Cu-Sn- Al the most promising is bronze with 3...4% (by weight) of these alloying components each.\nOriginality.For the first time number of physical and foundry properties of Cu-Sn-Al system bronze (with Sn content up\nto 6.73% and Al up to 7.53%) have been determined. It has been first established that such bronzes linear shrinkage,\ntransition temperature from plastic to elastic state during cooling after solidifying and impact bending value at normal\ntemperature depend on their structure, i.e. phase composition determined by its alloying elements content in bronze.\nPractical value.According to studies of physical and foundry properties results, bronze BrO3A3 has been recommended to be used as casting material","PeriodicalId":144571,"journal":{"name":"6, 2021","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Physical and foundry propertiesof Cu-Sn-Al system alloys\",\"authors\":\"Kimstach T, U. K, Repyakh S, Mazorchuk V, Usenko R, Ivanova L\",\"doi\":\"10.34185/tpm.6.2021.05\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Tin-aluminum bronze containing Sn - up to 6.73% and Al - up to 7.53% (by weight) physical and\\ncasting properties determination.\\nMethodology. Melting has been carried out in graphitecrucible in induction furnace under charcoal layer. Alloys liquidus\\nand solidus temperatures have been investigated by thermography results of solidifying melt. Free (С) and absolutely\\ndifficult (АЗ) linear shrinkage values and alloy transition temperature from plastic to elastic state during cooling in mold\\nhave been studied by conventional methods. Bronzes fluidity has been estimated by the spiral sample filled channel\\nlength according to GOST 16438. Bronze BrO3A3 tendency to burn and to hot and cold cracks formation has been\\nevaluated by samples surface visual examination results. Cast bronze specific density has been determined by calculation. Studied alloys mechanical properties have been calculated based on corresponding samples tests results at their\\nimpact bending at room temperature in accordance with actual standards. Alloys chemical composition control has been\\ncarried out on precision analyzer EXPERT 4L on specimens cut from club-shaped samples. Microstructural studies\\nhave been performed on metallographic microscopic samples prepared by standard methods on optical microscope\\nNeophot-21. Approximation reliability value and corresponding dependences have been built using EXEL computer program.\\nResults.According to qualitative and quantitative indicators and system Cu-Sn-Al bronzes with Sn content up to 6.73%\\nand Al content up to 7.53% physical and foundry properties assessments, it has been determined that among possible\\ntin and aluminum content in Cu-Sn- Al the most promising is bronze with 3...4% (by weight) of these alloying components each.\\nOriginality.For the first time number of physical and foundry properties of Cu-Sn-Al system bronze (with Sn content up\\nto 6.73% and Al up to 7.53%) have been determined. It has been first established that such bronzes linear shrinkage,\\ntransition temperature from plastic to elastic state during cooling after solidifying and impact bending value at normal\\ntemperature depend on their structure, i.e. phase composition determined by its alloying elements content in bronze.\\nPractical value.According to studies of physical and foundry properties results, bronze BrO3A3 has been recommended to be used as casting material\",\"PeriodicalId\":144571,\"journal\":{\"name\":\"6, 2021\",\"volume\":\"4 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"6, 2021\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.34185/tpm.6.2021.05\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"6, 2021","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.34185/tpm.6.2021.05","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Physical and foundry propertiesof Cu-Sn-Al system alloys
Tin-aluminum bronze containing Sn - up to 6.73% and Al - up to 7.53% (by weight) physical and
casting properties determination.
Methodology. Melting has been carried out in graphitecrucible in induction furnace under charcoal layer. Alloys liquidus
and solidus temperatures have been investigated by thermography results of solidifying melt. Free (С) and absolutely
difficult (АЗ) linear shrinkage values and alloy transition temperature from plastic to elastic state during cooling in mold
have been studied by conventional methods. Bronzes fluidity has been estimated by the spiral sample filled channel
length according to GOST 16438. Bronze BrO3A3 tendency to burn and to hot and cold cracks formation has been
evaluated by samples surface visual examination results. Cast bronze specific density has been determined by calculation. Studied alloys mechanical properties have been calculated based on corresponding samples tests results at their
impact bending at room temperature in accordance with actual standards. Alloys chemical composition control has been
carried out on precision analyzer EXPERT 4L on specimens cut from club-shaped samples. Microstructural studies
have been performed on metallographic microscopic samples prepared by standard methods on optical microscope
Neophot-21. Approximation reliability value and corresponding dependences have been built using EXEL computer program.
Results.According to qualitative and quantitative indicators and system Cu-Sn-Al bronzes with Sn content up to 6.73%
and Al content up to 7.53% physical and foundry properties assessments, it has been determined that among possible
tin and aluminum content in Cu-Sn- Al the most promising is bronze with 3...4% (by weight) of these alloying components each.
Originality.For the first time number of physical and foundry properties of Cu-Sn-Al system bronze (with Sn content up
to 6.73% and Al up to 7.53%) have been determined. It has been first established that such bronzes linear shrinkage,
transition temperature from plastic to elastic state during cooling after solidifying and impact bending value at normal
temperature depend on their structure, i.e. phase composition determined by its alloying elements content in bronze.
Practical value.According to studies of physical and foundry properties results, bronze BrO3A3 has been recommended to be used as casting material