The Numerical Analysis of the Phenomena of Superficial Hardening of the Hot-Work Tool Steel Elements

• Autorzy: Bokota A. , Kulawik A. , Szymczyk R. , Wróbel J.

Identyfikatory

DOI

10.1515/amm-2015-0445

Warianty tytułu

PL

Analiza numeryczna zjawisk przypowierzchniowego hartowania elementów ze stali narzędziowej do pracy na gorąco

• Języki publikacji: EN

Abstrakty

EN

In the paper the complex model of hardening of the hot-work tool steel is presented. Model of estimation of phase fractions and their kinetics is based on the continuous heating diagram (CHT) and cooling diagram (CCT). Phase fractions which occur during the continuous heating and cooling (austenite, pearlite or bainite) are described by Johnson-Mehl (JM) formula. To determine of the formed martensite the modified Koistinen-Marburger (KM) equation is used. Model takes into account the thermal, structural, plastic strains and transformation plasticity. To calculate the plastic strains the Huber-Mises plasticity condition with isotopic hardening is used. Whereas to determine transformations induced plasticity the Leblond model is applied. The numerical analysis of phase compositions and residual stresses in the hot-work steel (W360) element is considered.

PL

W pracy przedstawiono kompleksowy model hartowania stali narzędziowej do pracy na gorąco. Model szacowania ułamków faz oraz ich kinetyki oparto na wykresach ciągłego nagrzewania (CTPA) oraz chłodzenia (CTPc). Ułamki faz powstałych podczas ciągłego nagrzewania i chłodzenia (austenit, perlit lub bainit) wyznaczane są równaniem Johnsona- Mehla. Do określenia tworzącego się martenzytu wykorzystano zmodyfikowane równanie Koistinena i Marburgera. W modelu uwzględniono odkształcenia cieplne, strukturalne, plastyczne oraz odkształcenia transformacyjne. Do wyznaczania odkształceń plastycznych zastosowano warunek plastyczności Hubera-Misesa ze wzmocnieniem izotropowym, natomiast do wyznaczenia odkształceń transformacyjnych wykorzystano model Leblonda. Dokonano analizy numerycznej składu fazowego oraz naprężeń hartowniczych w elementach wykonanych ze stali narzędziowej do pracy na gorąco (W360).

Słowa kluczowe

EN

heat treatment; hot-work tool steel; phase transformations; thermo-elastic-plastic finite element analysis

PL

obróbka cieplna; stal narzędziowa do pracy na gorąco; przemiany fazowe; odkształcenia cieplne; odkształcenia plastyczne; odkształcenia transformacyjne

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2015
• Tom: Vol. 60, iss. 4
• Strony: 2763--2772
• Opis fizyczny: Bibliogr. 27 poz., rys.

Twórcy

autor

Bokota A.

• Czestochowa University of Technology, Institute of Computer and Information Sciences, The Faculty of Mechanical Engineering and Computer Science, 73 Dąbrowskiego Str., 42-200 Czestochowa, Poland

autor

Kulawik A.

• Czestochowa University of Technology, Institute of Computer and Information Sciences, The Faculty of Mechanical Engineering and Computer Science, 73 Dąbrowskiego Str., 42-200 Czestochowa, Poland

autor

Szymczyk R.

• Czestochowa University of Technology, Institute of Computer and Information Sciences, The Faculty of Mechanical Engineering and Computer Science, 73 Dąbrowskiego Str., 42-200 Czestochowa, Poland

autor

Wróbel J.

• Czestochowa University of Technology, Institute of Computer and Information Sciences, The Faculty of Mechanical Engineering and Computer Science, 73 Dąbrowskiego Str., 42-200 Czestochowa, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.