Wear Behavior of an Austempered Ductile Iron Containing Mo-Ni-Cu

Laboratory abrasive wear tests have been reported on permanent moulded toughened austempered ductile iron. The influence of austempering temperature on the abrasive wear behavior have been studied and discussed. The results indicate that with increase in austempering temperature from 300°C to 350°C, the abrasive wear resistance increased, and as the austempering temperature increased to 400°C, there was reduction in the abrasive wear resistance. These results have been interpreted based on the structural features and graphite morphology.

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Abrasive wear behavior of austempered ductile iron with niobium additions

Wear ◽

10.1016/j.wear.2019.203065 ◽

2019 ◽

Vol 440-441 ◽

pp. 203065 ◽

Cited By ~ 1

Author(s):

Amanda Souza Oliveira Pimentel ◽

Wilson Luiz Guesser ◽

William José Rodrigues Custódio da Silva ◽

Pedro Dolabella Portella ◽

Mathias Woydt ◽

...

Keyword(s):

Abrasive Wear ◽

Ductile Iron ◽

Wear Behavior ◽

Austempered Ductile Iron ◽

Abrasive Wear Behavior

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The Role of Bainite in Wear and Friction Behavior of Austempered Ductile Iron

Materials ◽

10.3390/ma12050767 ◽

2019 ◽

Vol 12 (5) ◽

pp. 767 ◽

Cited By ~ 3

Author(s):

Fulin Wen ◽

Jianhua Zhao ◽

Dengzhi Zheng ◽

Ke He ◽

Wei Ye ◽

...

Keyword(s):

Wear Resistance ◽

Ductile Iron ◽

Volume Fraction ◽

Wear Behavior ◽

Lower Bainite ◽

Austempered Ductile Iron ◽

Isothermal Quenching ◽

Micro Hardness ◽

Friction Behavior ◽

Upper Bainite

The austempered ductile iron was austenitized at 900 °C for 1 h and quenched in an isothermal quenching furnace at 380 °C and 280 °C, respectively. This paper aims to investigate the effects of bainite on wear resistance of austempered ductile iron (ADI) at different loads conditions. The micro-structure and phase composition of ADI was characterized and analyzed by metallographic microscope (OM), X-ray diffractometer (XRD) and scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS). The results showed that the volume fraction of retained austenite in ADI is reduced with the increase of austenitizing temperature. Meanwhile, the two kinds of ADI samples showed varied wear resistance when they were worn at different loads conditions. For wearing at a load of 25 N, the wear resistance of ADI mainly depends on matrix micro-hardness. Thus, ADI with lower bainite structure has higher hardness and leads to better wear resistance. When wearing at a load of 100 N, the increase of micro-hardness of upper bainite was significant. As a consequence, upper bainite showed superior friction and wear behavior. It was also found that the form of wear behavior of ADI changed from abrasive wear to fatigue delamination as the wear load increased from 25 N to 100 N according to the observation on worn surface.

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Wear Behavior of an Austempered Ductile Iron Containing Mo-Ni-Cu

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.199 ◽

2005 ◽

Vol 475-479 ◽

pp. 199-202 ◽

Cited By ~ 4

Author(s):

Sasan Yazdani ◽

M.A. Rahimi

Keyword(s):

Ductile Iron ◽

Applied Load ◽

Wear Behavior ◽

Strong Dependence ◽

Wear Test ◽

Ring Test ◽

Austempered Ductile Iron ◽

Test Machine ◽

Controlling Mechanism ◽

Austempering Temperature

The aim of the this investigation is to study the influence of Ni on tribiological behavior of an austempered ductile iron (ADI) containing Mo, Ni and Cu. Ductile irons with chemical composition Fe-3.56%C– 2.67%Si –0.25%Mo–0.5%Cu and Ni contents of 0.8 and 1.5% were cast into standard Y-blocks. Wear test samples were machined off from the bottom section of blocks. Austenitizing heat treatment was carried out at 870°C temperature followed by austempering at 270, 320, and 370°C for 5-1140 minutes. The wear test was carried out by using block-on-ring test machine. Sliding dry wear behavior was studied under applied loads of 50, 100 and 150N. The results show that wear resistance is independent of austempering temperature with an applied load of 50N, but there is a strong dependence at higher austempering temperatures with applied loads of 100 and 150N. Wear mechanism is described as being due to subsurface fatigue, with cracks nucleated at plastically, deformed graphite interfaces. The wear controlling mechanism is the crack growth when wear shows a dependence on applied load and austempering temperature.

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Microstructure, wear behavior and surface hardening of austempered ductile iron

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2020.06.076 ◽

2020 ◽

Vol 9 (5) ◽

pp. 9838-9855

Author(s):

Bingxu Wang ◽

Feng Qiu ◽

Gary C. Barber ◽

Yuming Pan ◽

Weiwei Cui ◽

...

Keyword(s):

Ductile Iron ◽

Surface Hardening ◽

Wear Behavior ◽

Austempered Ductile Iron

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Sliding wear behavior of laser surface hardened austempered ductile iron

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2020.10.050 ◽

2020 ◽

Vol 9 (6) ◽

pp. 14609-14618

Author(s):

Xue Han ◽

Zhenpu Zhang ◽

Yuming Pan ◽

Gary C. Barber ◽

Hongyu Yang ◽

...

Keyword(s):

Ductile Iron ◽

Sliding Wear ◽

Wear Behavior ◽

Laser Surface ◽

Austempered Ductile Iron

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Research on Wear Behavior of Tools while Infeed Cutting Austempered Ductile Iron (ADI) with Ceramic Tools

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.10-12.605 ◽

2007 ◽

Vol 10-12 ◽

pp. 605-609

Author(s):

Xu Hong Guo ◽

G. Liu ◽

G.S. Su

Keyword(s):

Abrasive Wear ◽

Ductile Iron ◽

Cutting Tool ◽

Wear Behavior ◽

Cutting Tools ◽

Cutting Speed ◽

Austempered Ductile Iron ◽

Rake Face ◽

Wear Area ◽

Tools Wear

Cutting tests had been done on the Austempered Ductile Iron (ADI) with ceramic cutting tools. The wear shape of the cutting tool’s surface was observed by the Scanning Electron Microscope (SEM). The micro-wear area of the tools was analyzed with energy spectrum. Study on wear shape and wear mechanisms were done when infeed cutting ADI. The result shows that: the cutting speed is an important factor to the tool wear when infeed cutting ADI with CC650 tool, and with the increase of the cutting speed, the wear value of cutting tool increases obviously. The flank of cutting tool (CC650) has wear land of definite width during cutting, and shows obvious abrasive wear. The crate wear shape of rake face is almost joined to major cutting edge, it is different from the typical crate shape of rake face. Elements Fe, Si and Mg in ADI material diffuses to the surface of cutting tools (CC650) after cutting, the diffusion exacerbates the wear of cutting tools, and the diffusion degree of rake face is larger than that of flank, abrasive wear, adhesive wear and diffusive wear is chief reasons for tools wear.

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