The influence of chromium on mechanical properties of austempered ductile cast iron

1995 ◽  
Vol 4 (1) ◽  
pp. 90-101 ◽  
Author(s):  
L. Bartosiewicz ◽  
I. Singh ◽  
F. A. Alberts ◽  
A. R. Krause ◽  
S. K. Putatunda
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Ductile Cast Iron ◽  
Austempered Ductile Cast Iron

Property and Application of Austempered Ductile Cast Iron

2011 ◽  
Vol 328-330 ◽  
pp. 1297-1300
Author(s):  
Guang Si Luo
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Cast Iron ◽  
Treatment Process ◽  
Nodular Cast Iron ◽  
Ductile Cast Iron ◽  
Heat Treatment Process ◽  
Engineering Material ◽  
High Fatigue ◽  
Austempered Ductile Cast Iron

Austempered ductile cast iron is newly developed engineering material with a favorable combination of comprehensive mechanical properties. Its properties, such as good comprehensive mechanical properties, high fatigue strength, and good fiction and wear characteristics are included. The application of ADI at home and abroad was presented as well. In order to ensure and improve mechanical properties of ADI, it should ensure high rank nodularity in terms of nodular cast iron, improve graphite nodules, reduce segregation and properly cut down the content of silicon and manganese. While in terms of heat treatment, in order to achieve ideal austenite ferrites, stable and reliable heat treatment process as well as relevant equipment is required.

scholarly journals Effect of Subzero Treatment on the Microstructure and Mechanical Properties of Austempered Ductile Cast Iron

2009 ◽  
Vol 50 (9) ◽  
pp. 2207-2211 ◽  
Author(s):  
Chang-Yong Kang ◽  
Kwang-Hee Lee ◽  
Hae Ryong Jung ◽  
Gwang-Ho Kim ◽  
Byoung-Suhk Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Ductile Cast Iron ◽  
Microstructure And Mechanical Properties ◽  
Austempered Ductile Cast Iron

scholarly journals Influence of Austempering Temperatures on the Microstructure and Mechanical Properties of Austempered Ductile Cast Iron

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 967
Author(s):  
Regita Bendikiene ◽  
Antanas Ciuplys ◽  
Ramunas Cesnavicius ◽  
Audrius Jutas ◽  
Aliaksandr Bahdanovich ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Salt Bath ◽  
Ductile Cast Iron ◽  
Spheroidal Graphite ◽  
Xrd Diffraction ◽  
Microstructure And Mechanical Properties ◽  
Graphite Cast Iron ◽  
Austempering Temperature ◽  
Austempered Ductile Cast Iron

The influence of the austempering temperatures on the microstructure and mechanical properties of austempered ductile cast iron (ADI) was investigated. ADI is nodular graphite cast iron, which owing to higher strength and elongation, exceeds mechanical properties of conventional spheroidal graphite cast iron. Such a combination of properties is achieved by the heat treatment through austenitization, followed by austempering at different temperatures. The austenitization conditions were the same for all the samples: temperature 890 °C, duration 30 min, and quenching in a salt bath. The main focus of this research was on the influence of the austempering temperatures (270 °C, 300 °C, and 330 °C) on the microstructure evolution, elongation, toughness, and fatigue resistance of ADI modified by certain amounts of Ni, Cu, and Mo. The Vickers and Rockwell hardness decreased from 535.7 to 405.3 HV/1 (55.7 to 44.5 HRC) as the austempering temperature increased. Optical images showed the formation of graphite nodules and a matrix composed of ausferrite; the presence of these phases was confirmed by an XRD diffraction pattern. A fracture surface analysis revealed several types of the mechanisms: cleavage ductile, transgranular, and ductile dimple fracture. The stress-controlled mechanical fatigue experiments revealed that a 330 °C austempering temperature ensures the highest fatigue life of ADI.

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