Thermomechanical treatment of Ti and Ti–V microalloyed steel forgings

• Autorzy: Opielak Marek

Identyfikatory

DOI

10.15199/28.2019.3.2

Warianty tytułu

PL

Obróbka cieplno-plastyczna odkuwek ze stali mikrostopowych z Ti oraz Ti i V

• Języki publikacji: EN

Abstrakty

EN

The research results of the effect of thermomechanical treatment conditions on the microstructure and mechanical properties of the Ti and Ti–V microalloyed steels were presented. The steel forged parts studied were intended to be used in the automotive industry. The method of thermomechanical treatment and forging conditions were developed based on the analysis of precipitation kinetics of MX interstitial phases in a solid solution and the austenitizing temperature effects on the prior austenite grain size. To reveal the microstructure, the light microscopy and transmission electron microscopy techniques were used. Very high mechanical properties of the forgings along with guaranteed toughness were obtained as a result of the optimal use of grain refinement and precipitation strengthening by dispersive particles of carbides, carbonitrides and nitrides of microadditions introduced into steel. Depending on the variant of thermomechanical treatment used to the forgings, the following range of the mechanical properties, after tempering at 600°C, were obtained: YS0.2 from 696 to 850 MPa, UTS from 770 to 932 MPa, KV from 186 to 215 J, and the HBW hardness of 220÷250.

PL

W pracy przedstawiono wyniki badań struktury, właściwości mechanicznych oraz hartowności stali konstrukcyjnych C–Mn o różnym stężeniu mikrododatków Ti, V i B, przeznaczonych do wytwarzania odkuwek energooszczędną metodą obróbki cieplno-plastycznej.

Słowa kluczowe

EN

microalloyed steels; thermomechanical treatment; structure; mechanical properties

PL

stale mikrostopowe; obróbka cieplno-plastyczna; struktura; własności mechaniczne

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2019
• Tom: Vol. 40, nr 3
• Strony: 68--73
• Opis fizyczny: Bibliogr. 20 poz., fig., tab.

Twórcy

autor

Opielak Marek

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Gliwice

Bibliografia

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• [20] Standard Method for End-Quench Test for Hardenability of Steel, A252-89, 1989.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).