Highsilicone Austempered Ductile Iron

Abstract Ductile iron casts with a higher silicone content were produced. The austempering process of high silicone ductile iron involving different austempering times was studied and the results presented. The results of metallographical observations and tensile strength tests were offered. The obtained results point to the fact that the silicone content which is considered as acceptable in the literature may in fact be exceeded. The issue is viewed as requiring further research

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Tensile Strength Properties of Niobium Alloyed Austempered Ductile Iron on Different Austempering Time

Advanced Materials Research ◽

10.4028/scientific5/amr.457-458.1155 ◽

2012 ◽

Vol 457-458 ◽

pp. 1155-1158

Author(s):

Bulan Abdullah ◽

Siti Khadijah Alias ◽

A. Jaffar ◽

Abd Amirul Rashid ◽

M. Haskil ◽

...

Keyword(s):

Tensile Strength ◽

Ductile Iron ◽

Strength Properties ◽

Austempered Ductile Iron

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Effect of Two-Step Austempering Time on Tensile Strength and Fracture Morphology of Austempered Ductile Iron (ADI)

International Review of Mechanical Engineering (IREME) ◽

10.15866/ireme.v13i8.17109 ◽

2019 ◽

Vol 13 (8) ◽

pp. 465

Author(s):

Andoko Andoko ◽

Poppy Puspitasari ◽

Femiana Gapsari

Keyword(s):

Tensile Strength ◽

Ductile Iron ◽

Fracture Morphology ◽

Austempered Ductile Iron

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Tensile Strength Properties of Niobium Alloyed Austempered Ductile Iron on Different Austempering Time

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.457-458.1155 ◽

2012 ◽

Vol 457-458 ◽

pp. 1155-1158 ◽

Cited By ~ 4

Author(s):

Bulan Abdullah ◽

Siti Khadijah Alias ◽

A. Jaffar ◽

Abd Amirul Rashid ◽

M. Haskil ◽

...

Keyword(s):

Heat Treatment ◽

Tensile Strength ◽

Ultimate Tensile Strength ◽

Ductile Iron ◽

Salt Bath ◽

Strength Properties ◽

Austempered Ductile Iron ◽

Bath Furnace

This study focused on tensile strength properties inclusive of ultimate tensile strength and elongation values of niobium alloyed ductile iron in as cast and austempered conditions. The tensile specimens were machined according to TS 138 EN 10002-1 standard. Austempering heat treatment was conducted by first undergoing austenitizing process at 900°C before rapidly quenched in salt bath furnace and held at 350°C for 1 hour, 2 hours and 3 hours subsequently. The findings indicated that austempering the samples for 1 hour had resulted in improvement of almost twice of the tensile strength in niobium alloyed ductile iron. Improvement of elongations values were also noted after 1 hour austempering times. Increasing the austempering holding times to 2 hour and 3 hours had resulted in decrement in both tensile strength and elongations values.

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Mechanical characterization and optimization of heat treatment parameters of manganese alloyed austempered ductile iron

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.13.1.2019.01.0371 ◽

2019 ◽

Vol 13 (1) ◽

pp. 4356-4367

Author(s):

Ananda Hegde ◽

Sathyashankara Sharma ◽

Ramakrishna Vikas Sadanand

Keyword(s):

Heat Treatment ◽

Tensile Strength ◽

Ductile Iron ◽

Manganese Content ◽

Austempered Ductile Iron ◽

Regression Equations ◽

Cast Irons ◽

Austenitization Temperature ◽

The Family ◽

Austempering Temperature

Austempered Ductile Iron (ADI) belongs to the family of cast irons whose mechanical properties are altered using austempering heat treatment process. The objective of this paper is to study the effects of heat treatment parameters on manganese alloyed ADI. Hence, austenitization temperature, austempering temperature and austempering time are taken as the control variables along with the manganese content in the material. The effects of heat treatment are studied by measuring the ultimate tensile strength and the hardness of the material. The regression equations are developed to relate the various parameters under study. The microstructures of the specimen reveal that retained austenite content increases with increase in manganese and results in decrease in hardness of the material. The statistical analyses indicate that the austempering temperature is the major factor affecting the variation in hardness and tensile strength with 74.5 % of contribution within the range of values whereas, variation in manganese content does not have significant effect on hardness within the investigated composition range in the material.

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Study of Bismuth Telluride Crystal Strength

Mechanical Engineering and Computer Science ◽

10.24108/0619.0001503 ◽

2019 ◽

pp. 1-8

Author(s):

A. A. Gorbatovskiy

Keyword(s):

Tensile Strength ◽

Bismuth Telluride ◽

Elasticity Modulus ◽

Testing Machine ◽

Bend Testing ◽

Instron Testing Machine ◽

Measurement Results ◽

Strength Tests ◽

Semiconductor Properties

The article presents results of strength tests of bismuth telluride prismatic samples obtained by growing crystals. These crystals have semiconductor properties and are used in the heat machines, the run-ability of which largely depends on the strength of crystals. Data available in the literature are significantly different from each other. It has been shown that, the most consistent strength tests results are obtained in case of bend testing. The measurement results of the elasticity modulus and tensile strength are given. For tests, an INSTRON testing machine with maximum direct stress of the 1000 H was used.

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