Effect of Countersample Coatings on the Friction Behaviour of DC01 Steel Sheets in Bending-under-Tension Friction Tests DOI Open Access
Tomasz Trzepieciński, Krzysztof Szwajka, Marek Szewczyk

и другие.

Materials, Год журнала: 2024, Номер 17(15), С. 3631 - 3631

Опубликована: Июль 23, 2024

The aim of this article is to provide an analysis the influence type hard anti-wear coatings on friction behaviour DC01 deep-drawing steel sheets. sheets exhibit high formability, and they are widely used in sheet metal forming operations. tribological properties tool surface, especially coating used, determine conditions forming. In order carry out research, study developed manufactured a special bending-under-tension (BUT) tribometer that models phenomenon rounded edges tools process. rationale for building tribotester was there no commercial tribotesters available can be model processes. deformation coefficient (CoF) change topography surface were analysed. Countersamples with surfaces prepared using titanium + nitrogen ion implantation, implantation electron beam remelting tested. tests carried dry lubrication oils different kinematic viscosities. Under conditions, clear increase CoF value, elongation samples all analysed types countersamples, observed. lubricated uncoated countersample showed most favourable conditions. Furthermore, oil lower viscosity provided more reducing friction. Within entire range sample elongation, by S100+ oil. During process, average roughness decreased as result flattening phenomenon. value Sa parameter during BUT test 20.3-30.2%, depending countersample. As kurtosis skewness increased decreased, respectively, compared as-received metal.

Язык: Английский

A Study on Yield Criteria Influence on Anisotropic Behavior and Fracture Prediction in Deep Drawing SECC Steel Cylindrical Cups DOI Open Access

Quy-Huy Trieu,

The-Thanh Luyen, Duc-Toan Nguyen

и другие.

Materials, Год журнала: 2024, Номер 17(12), С. 2872 - 2872

Опубликована: Июнь 12, 2024

The deep drawing process, a pivotal technique in sheet metal forming, frequently encounters challenges such as anisotropy-induced defects. This study comprehensively investigates the influence of various yield criteria on anisotropic behavior and fracture prediction SECC steel cylindrical cups. It integrates Hill'48R, Hill'48S, von Mises conjunction with Swift's hardening law to evaluate material under complex stress states. Experimental numerical simulations assess anisotropy effects across multiple orientations (0°, 45°, 90°), revealing intricate relationships between response. findings indicate significant discrepancies isotropic models predicting heights, emphasizing importance selecting appropriate criteria. Notably, criterion results lower suggesting higher susceptibility fractures, while Hill'48R model aligns closely experimental data, validated through variations punch corner radius blank holder force parameters, maximum deviation 3.23%. Hill'48S displays moderate plastic deformation characteristics.

Язык: Английский

Процитировано

2
Effect of Countersample Coatings on the Friction Behaviour of DC01 Steel Sheets in Bending-under-Tension Friction Tests DOI Open Access
Tomasz Trzepieciński, Krzysztof Szwajka, Marek Szewczyk

и другие.

Materials, Год журнала: 2024, Номер 17(15), С. 3631 - 3631

Опубликована: Июль 23, 2024

The aim of this article is to provide an analysis the influence type hard anti-wear coatings on friction behaviour DC01 deep-drawing steel sheets. sheets exhibit high formability, and they are widely used in sheet metal forming operations. tribological properties tool surface, especially coating used, determine conditions forming. In order carry out research, study developed manufactured a special bending-under-tension (BUT) tribometer that models phenomenon rounded edges tools process. rationale for building tribotester was there no commercial tribotesters available can be model processes. deformation coefficient (CoF) change topography surface were analysed. Countersamples with surfaces prepared using titanium + nitrogen ion implantation, implantation electron beam remelting tested. tests carried dry lubrication oils different kinematic viscosities. Under conditions, clear increase CoF value, elongation samples all analysed types countersamples, observed. lubricated uncoated countersample showed most favourable conditions. Furthermore, oil lower viscosity provided more reducing friction. Within entire range sample elongation, by S100+ oil. During process, average roughness decreased as result flattening phenomenon. value Sa parameter during BUT test 20.3-30.2%, depending countersample. As kurtosis skewness increased decreased, respectively, compared as-received metal.

Язык: Английский

Процитировано

2