YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • ASME
    • Journal of Manufacturing Science and Engineering
    • View Item
    •   YE&T Library
    • ASME
    • Journal of Manufacturing Science and Engineering
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Thermal Stress Development During Vacuum Arc Remelting and Permanent Mold Casting of Ingots

    Source: Journal of Manufacturing Science and Engineering:;1998:;volume( 120 ):;issue: 004::page 755
    Author:
    M. K. Alam
    ,
    S. L. Semiatin
    ,
    Z. Ali
    DOI: 10.1115/1.2830216
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The development of thermal stresses in ingots during the vacuum arc remelting (VAR) as well as specialized permanent mold casting (PMC) process was modeled via numerical solution of the two-dimensional, nonsteady-state heat conduction and stress equilibrium equations. The numerical analysis was carried out in conjunction with experimental studies of the mechanical properties and microstructure of a cracked VAR titanium aluminide ingot. Numerical solutions were obtained for different values of ingot diameter, crucible-ingot interface heat transfer coefficients, and lengths of the melted-and-resolidified ingot. For both VAR and PMC, model predictions revealed that the maximum tensile thermal stresses are developed at the bottom of the ingot; the magnitude of such stresses increases with ingot diameter and the magnitude of the interface heat transfer coefficients. The microstructural analysis of a cracked ingot indicated that the thermal cracking occurred in the temperature range where the alloy has very little ductility. The predicted development of large tensile stresses correlates well with observations of thermal cracking during VAR of near-gamma titanium aluminide alloy ingots. By contrast, the predicted thermal stresses developed during PMC are lower, thus suggesting an attractive alternative to VAR to obtain sound, crack-free ingots.
    keyword(s): Casting , Vacuum , Thermal stresses , Fracture (Process) , Alloys , Stress , Titanium aluminide , Heat transfer coefficients , Equilibrium (Physics) , Temperature , Sound , Heat conduction , Numerical analysis , Equations , Tension , Ductility , Fracture (Materials) AND Mechanical properties ,
    • Download: (1.957Mb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Thermal Stress Development During Vacuum Arc Remelting and Permanent Mold Casting of Ingots

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/120719
    Collections
    • Journal of Manufacturing Science and Engineering

    Show full item record

    contributor authorM. K. Alam
    contributor authorS. L. Semiatin
    contributor authorZ. Ali
    date accessioned2017-05-08T23:57:08Z
    date available2017-05-08T23:57:08Z
    date copyrightNovember, 1998
    date issued1998
    identifier issn1087-1357
    identifier otherJMSEFK-27335#755_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/120719
    description abstractThe development of thermal stresses in ingots during the vacuum arc remelting (VAR) as well as specialized permanent mold casting (PMC) process was modeled via numerical solution of the two-dimensional, nonsteady-state heat conduction and stress equilibrium equations. The numerical analysis was carried out in conjunction with experimental studies of the mechanical properties and microstructure of a cracked VAR titanium aluminide ingot. Numerical solutions were obtained for different values of ingot diameter, crucible-ingot interface heat transfer coefficients, and lengths of the melted-and-resolidified ingot. For both VAR and PMC, model predictions revealed that the maximum tensile thermal stresses are developed at the bottom of the ingot; the magnitude of such stresses increases with ingot diameter and the magnitude of the interface heat transfer coefficients. The microstructural analysis of a cracked ingot indicated that the thermal cracking occurred in the temperature range where the alloy has very little ductility. The predicted development of large tensile stresses correlates well with observations of thermal cracking during VAR of near-gamma titanium aluminide alloy ingots. By contrast, the predicted thermal stresses developed during PMC are lower, thus suggesting an attractive alternative to VAR to obtain sound, crack-free ingots.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThermal Stress Development During Vacuum Arc Remelting and Permanent Mold Casting of Ingots
    typeJournal Paper
    journal volume120
    journal issue4
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.2830216
    journal fristpage755
    journal lastpage763
    identifier eissn1528-8935
    keywordsCasting
    keywordsVacuum
    keywordsThermal stresses
    keywordsFracture (Process)
    keywordsAlloys
    keywordsStress
    keywordsTitanium aluminide
    keywordsHeat transfer coefficients
    keywordsEquilibrium (Physics)
    keywordsTemperature
    keywordsSound
    keywordsHeat conduction
    keywordsNumerical analysis
    keywordsEquations
    keywordsTension
    keywordsDuctility
    keywordsFracture (Materials) AND Mechanical properties
    treeJournal of Manufacturing Science and Engineering:;1998:;volume( 120 ):;issue: 004
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian