Microstructure and Dry/Wet Tribological Behaviors of 1% Cu-Alloyed Austempered Ductile Iron

Hsu, Cheng-Hsun; Lin, Ching‐Yi; You, Wei-Shih

doi:10.3390/ma16062284

Cited by 6 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The friction coefficient of the specimen is thus directly dependent upon the surface roughness. In addition, another im portant indicator of wear test results is to use the wear rate to evaluate the wear resistance [37]. In this study, it was observed that the wear rate of the coated specimens was signifi cantly lower than that of the uncoated ones, as illustrated in Figure 11.…”

Section: Analysis Of Wear Behaviormentioning

confidence: 83%

Wear and Corrosion Performance of Ti-6Al-4V Alloy Arc-Coated TiN/CrN Nano-Multilayer Film

Hsu

Lin

Chen

2023

Metals

Self Cite

View full text Add to dashboard Cite

The objective of this study was to investigate the effect of varying bias parameters (−50 V, −100 V, and −150 V) on the properties of TiN/CrN multilayer films deposited on Ti-6Al-4V alloy using the cathodic arc deposition (CAD) technique. The deposited films were characterized for their composition, structure, morphology, thickness, adhesion, and hardness. Wear and polarization tests were also conducted to determine the optimal bias condition for wear and corrosion resistance. The results showed that the TiN/CrN films possessed a nano-multilayered structure comprising TiN and CrN phases. The hard coating significantly increased the surface hardness of Ti-6Al-4V alloy up to three–five times. The coated specimens demonstrated superior wear resistance compared to the uncoated, with the −150 V specimen exhibiting the least wear rate. Furthermore, the −150 V specimen had the highest polarization impedance value, indicating the best corrosion resistance compared to the other bias conditions. In short, the use of CAD-coated TiN/CrN multilayer film enhanced the surface properties of Ti-6Al-4V alloy, with the best wear and corrosion resistance achieved at −150 V bias. These novel findings have significant implications for improving the performance and durability of Ti-6Al-4V alloy components in various industrial applications.

show abstract

Section: Analysis Of Wear Behaviormentioning

confidence: 83%

Wear and Corrosion Performance of Ti-6Al-4V Alloy Arc-Coated TiN/CrN Nano-Multilayer Film

Hsu

Lin

Chen

2023

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…The second step in the GRA process is calculation of the GRC. The GRC is calculated following Equation (14).…”

Section: Multi Response Optimisation Of Mechanical Properties By Grey...mentioning

confidence: 99%

“…The austempered matrix has a better ductility and tensile strength ratio than any other types of ductile iron. Depending on the content of the alloying elements and heat treatment parameters, different mechanical properties of ADI can be achieved [12][13][14]. To properly austemper ductile iron, it must be austenitised at the proper temperature for certain amount of time, quenched at the austempering temperature, preferably in a salt bath, and air cooled to room temperature [15].…”

Section: Introductionmentioning

confidence: 99%

Multi Response Modelling and Optimisation of Copper Content and Heat Treatment Parameters of ADI Alloys by Combined Regression Grey-Fuzzy Approach

Čatipović,

Peko,

Grgić

et al. 2024

Metals

View full text Add to dashboard Cite

This paper deals with the austempering of ductile iron (ADI) and clarifies the influential austempering parameters during the production of ADI. During the austempering process, the heat treatment parameters can be varied, thus influencing the final microstructure and, of course, the mechanical properties of ADI. To appropriately conduct experiments and obtain good results, an experimental plan was developed using the Design Expert 13 software. Along with the heat treatment parameters, the influence of the copper content on the ADI toughness, tensile strength, and elongation was determined. The obtained results from this experiment were used to develop unique mathematical models which describe the influences of heat treatment and copper content on the observed mechanical properties of ADI samples. These mathematical models can be applied to predict the analysed mechanical properties of ADI in the dependence of heat treatment parameters and copper content in base ductile iron. For the multi response optimisation of toughness, tensile strength, and elongation, a hybrid grey-fuzzy technique was presented as a significant contribution to the enhancement of the analysed mechanical properties. Consequently, the copper content and heat treatment parameter levels that resulted in the maximal mechanical properties’ functions were defined.

show abstract

“…DCI is among the economically viable materials subject to increasing demand. It has inherently more favourable mechanical properties compared to grey cast iron, and with heat treatment (HT) it can achieve much better properties [2][3][4][5][6][7][8][9]. Austempering DCI generates austempered ductile iron (ADI).…”

Section: Introductionmentioning

confidence: 99%

Influence of a Novel Double Tempering Process on the Microstructure and Mechanical Properties of Cu-Alloyed Austempered Ductile Iron with Possible Nano (Micro)-Characterization Using Neutron Beam Techniques

Čatipović,

Rogante,

Avdušinović

et al. 2023

Crystals

View full text Add to dashboard Cite

In this paper, a novel method for the double heat treatment of ductile iron was applied. Ten sets of specimens (three specimens in each set) of ductile cast iron (DCI) containing 0.51% wt. Cu were prepared and converted to austenitic ductile iron. All specimens were austenitized at 850 °C for 60 min and annealed at 420 °C, 331 °C and 250 °C for 120, 68 and 30 min, respectively. Five sets of samples were then annealed at 500 °C for 60 min, creating a novel double heat treatment process for annealing. Finally, all specimens were slowly cooled in air at ambient temperature. Tensile strength, hardness and elongation were measured in all specimens to compare the specimens with and without subsequent tempering. A microstructural analysis was also performed, which showed that the microstructure changed for the specimens that were subsequently tempered with. The results show that specimens with subsequent tempering have slightly higher hardness, a small decrease in tensile strength and significantly higher elongation. In addition, specimens with subsequent tempering exhibit more uniform mechanical properties compared to specimens without subsequent tempering. The use of neutron beam techniques was proposed to further characterize the newly formed microstructure after subsequent tempering.

show abstract

Microstructure and Dry/Wet Tribological Behaviors of 1% Cu-Alloyed Austempered Ductile Iron

Cited by 6 publications

References 26 publications

Wear and Corrosion Performance of Ti-6Al-4V Alloy Arc-Coated TiN/CrN Nano-Multilayer Film

Wear and Corrosion Performance of Ti-6Al-4V Alloy Arc-Coated TiN/CrN Nano-Multilayer Film

Multi Response Modelling and Optimisation of Copper Content and Heat Treatment Parameters of ADI Alloys by Combined Regression Grey-Fuzzy Approach

Influence of a Novel Double Tempering Process on the Microstructure and Mechanical Properties of Cu-Alloyed Austempered Ductile Iron with Possible Nano (Micro)-Characterization Using Neutron Beam Techniques

Contact Info

Product

Resources

About