Thermal Fatigue of the Selected Tool Steel Applied for Metal Moulds Elements in Die Casting of Metals

2013 ◽  
Vol 58 (3) ◽  
pp. 757-761 ◽  
Author(s):  
J. Zych
Keyword(s):  
Fatigue Resistance ◽  
Tool Steel ◽  
Thermal Fatigue ◽  
Test Bench ◽  
Die Casting ◽  
Fatigue Tests ◽  
Vanadium Content ◽  
Temperature Cycle ◽  
Thermal Fatigue Resistance ◽  
Steel Grades

Abstract The work presents the results of research on thermal fatigue resistance of four steel grades used in the production of metal moulds for pressure diecasting. Thermal fatigue tests were performed on an original test bench using the L.F Coffin method - resistance heated samples. The steels additionally contained alloy additives in the following proportions: Cr = 5.0 ÷5.3%, Mo = 1.30 ÷3.0%, and V = 0.50 ÷1.0%. The thermal fatigue was analyzed using the temperature cycle: Tmin = 200°C; Tmax = 700 ÷750°C. The samples endured between few to few dozens of thousands of temperature cycles in the above temperature range. Steel with maximum vanadium content exhibited the highest level of resistance.

Thermal fatigue resistance of plasma duplex-treated tool steel

2001 ◽  
Vol 142-144 ◽  
pp. 1109-1115 ◽  
Author(s):  
M Pellizzari ◽  
A Molinari ◽  
G Straffelini
Keyword(s):  
Fatigue Resistance ◽  
Tool Steel ◽  
Thermal Fatigue ◽  
Thermal Fatigue Resistance

scholarly journals Thermal Fatigue Model of Aluminium Alloy Die Casting H-13 Dies under Thermo-Mechanical Cycle

Mechanika ◽  
2021 ◽  
Vol 27 (5) ◽  
pp. 385-391
Author(s):  
Ghusoon Ridha Mohammed Ali ◽  
Ethar Mohammed Mubarak ◽  
Basim Hussein Abbas
Keyword(s):  
Thermal Cycling ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Die Casting ◽  
Thermal Conditions ◽  
Thermal Fatigue Resistance ◽  
Heating And Cooling ◽  
Mechanical Cycling ◽  
Fatigue Model

In industrial fields, thermal fatigue behavior has recently acquired an important role which is mainly related to the interaction between mechanical and thermal conditions. This paper proposes a thermal fatigue model of H13 tool steel under thermos-mechanical cycles. A test apparatus was used to assess the thermal fatigue resistance of materials to estimate surface crack area when specimens are subjected to thermal cycling. Thermal cycling up to 700°C was used, and crack patterns were examined after 1850, 3000, and 5000 cycles. Temperature distributions were measured at different locations in the test specimens. A model was developed to establish a relationship between mechanical cycling and thermal analysis. From the results, the thermal fatigue resistance was significantly improved over the control parameter after heating and cooling during thermomechanical cycles. The model was applied to determine the best performance and in-service life of die casting tools.

Study on the Thermal Fatigue Resistance of Ductile Iron

2012 ◽  
Vol 512-515 ◽  
pp. 2093-2096
Author(s):  
Zhang Yin Xu ◽  
Yin Ju Jiang
Keyword(s):  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Ductile Iron ◽  
Service Condition ◽  
Nodular Cast Iron ◽  
Temperature Cycle ◽  
Matrix Structure ◽  
Thermal Fatigue Resistance ◽  
Aluminum Ingot ◽  
Bainitic Structure

Simulated service condition of aluminum ingot casting molds, samples of ductile iron was tested in a temperature Cycle from750°C and water-cooled to 25°C till a crack appeared in the sample. its thermal fatigue resistance of samples based various microstructure included as—casting, annealing or alloying ferritic matrix structure, or alloying pearlitic structure and the upper or low the bainitic structure had been researched. The study shows that the thermal fatigue resistance of the annealing ferritic nodular cast iron was superior to the others.

Thermal-Fatigue Resistance: Material, Geometric, and Temperature Field Considerations

1965 ◽  
Author(s):  
A. E. Carden
Keyword(s):  
Temperature Field ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Strain Range ◽  
Circular Disk ◽  
Fatigue Tests ◽  
Plastic Strain Range ◽  
Thermal Fatigue Resistance ◽  
Disk Specimen ◽  
Fatigue Data

Data from four kinds of thermal-fatigue tests and from three materials are presented as a basis for a discussion of the influence of material, geometry, and the temperature field on the temperature range versus life relationship for thermal fatigue. A method is given whereby the results of the tests of internally constrained specimens can be compared with results from tests of externally constrained specimens. By appropriate design of a circular disk specimen either the radial or the tangential stress can be selected as the cyclic principal stress. Thermal-fatigue data from three materials are used to show that the plastic-strain range versus life relationship is not a sufficient criterion of merit when rating materials for thermal-fatigue resistance.

LSS H13

Alloy Digest ◽  
2012 ◽  
Vol 61 (10) ◽  
Keyword(s):  
Physical Properties ◽  
Fatigue Resistance ◽  
Tool Steel ◽  
Thermal Fatigue ◽  
Heat Treating ◽  
Steel Company ◽  
Hot Strength ◽  
Thermal Fatigue Resistance ◽  
Hot Work Tool Steel ◽  
Specialty Steel

Abstract LSS H13 is a hot work tool steel with versatility. It has hot strength, toughness, and thermal fatigue resistance. This datasheet supersedes Alloy Digest TS-688, April 2010. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-708. Producer or source: Latrobe Specialty Steel Company.

Effect of Vanadium on Thermal Fatigue Resistance of Cr5 Deposited Metal

2012 ◽  
Vol 512-515 ◽  
pp. 1892-1900
Author(s):  
Qing Bao Wang ◽  
Zhuo Xin Li ◽  
Yao Wu Shi ◽  
Jing Xiao
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Crack Length ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Fatigue Cracks ◽  
Vanadium Content ◽  
Thermal Fatigue Resistance ◽  
Deposited Metal ◽  
High Temperature Tensile

In the present work, effect of vanadium on mechanical and thermal fatigue resistance of Cr5 deposited metal is investigated. It is found that hard phases with rich vanadium are mainly distributed at grain boundaries. Vanadium affects the high temperature tensile strength and thermal fatigue cracking obviously. With the increase of vanadium content, high temperature tensile strength of deposited metals shows a initial rise up, then drop for more than 0.54 wt.% V. Toughness and high temperature plasticity are increased up to 0.26 wt.% V, then drop up to 0.89 wt.% V, then toughness and plasticity increase again. Moreover, the thermal fatigue crack length shows a initial decrease up to 0.26 wt. % V, then slightly rise up for 0.89 wt.% V, then crack length shorten again. It is expected that the optimal vanadium content is in a range of 0.18~0.26 wt.% for resisting the thermal crack growth. Fractographic observation shows that the thermal fatigue cracks mainly are transgranular growth. It is felt that the crack length is closely related to microstructure, oxidation resistance, toughness and high temperature plasticity of the deposited alloy

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