2017
DOI: 10.15407/mfint.39.09.1197
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Formation of Optimum Structural Strength of Aviation Fastening Bolts from Titanium Alloys

Abstract: Разработана методология формирования оптимальной конструкционной прочности τ ср. авиационных крепёжных болтов из титановых сплавов с целью сбалансированности сочетания свойств прочности и пластичности путём рационального подбора комплекса их базовых механических ха-рактеристик: условного предела текучести σ 0,2 , предела прочности σ В , от-носительного сужения в момент разрушения образца ψ K . Установлено, что величину конструкционной прочности τ ср. авиационных крепёжных болтов из титановых сплавов формируют … Show more

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“…As it is shown in the previous investigations, in the titanium alloys of the martensite type (i.e. those in which martensite phases form upon quenching [1, 2,6]) in non-equilibrium conditions the beta stabilizers (elements which stabilize the β-phase) act 'cooperatively', and their collective behaviour can be described by means of molybdenum equivalent Mo 0 C [7]. This coefficient allows taking into account the contribution of various alloying elements in β-phase stabilization upon quenching from the single-phase β-field through known ratio between molybdenum and other elements [7,8].…”
Section: Introductionmentioning
confidence: 96%
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“…As it is shown in the previous investigations, in the titanium alloys of the martensite type (i.e. those in which martensite phases form upon quenching [1, 2,6]) in non-equilibrium conditions the beta stabilizers (elements which stabilize the β-phase) act 'cooperatively', and their collective behaviour can be described by means of molybdenum equivalent Mo 0 C [7]. This coefficient allows taking into account the contribution of various alloying elements in β-phase stabilization upon quenching from the single-phase β-field through known ratio between molybdenum and other elements [7,8].…”
Section: Introductionmentioning
confidence: 96%
“…those in which martensite phases form upon quenching [1, 2,6]) in non-equilibrium conditions the beta stabilizers (elements which stabilize the β-phase) act 'cooperatively', and their collective behaviour can be described by means of molybdenum equivalent Mo 0 C [7]. This coefficient allows taking into account the contribution of various alloying elements in β-phase stabilization upon quenching from the single-phase β-field through known ratio between molybdenum and other elements [7,8]. Most commonly the molybdenum equivalent is calculated as 1 1 Unlike other authors, we do not take into account the presence of aluminium (with a minus sign), since in such a case the total amount of β-stabilizers should drops below a critical level (for example, in alloys like VT22 or Ti-5-5-5-5-3 essentially lower than 11.5% Mo), which would lead to non-fixation of the metastable β-phase upon quenching from temperatures of single-phase β-field that does not actually happen.…”
Section: Introductionmentioning
confidence: 99%
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