GRAIN GROWTH KINETICS OF 70-30 BRASS CONTAINING MN

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ZAMANI AZAM; AKBARI GH.H.

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Journal: Journal of Advanced Processes in Materials Engineering Year:2009 | Volume:2 | Issue:7 Page(s): 33-38

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Title

GRAIN GROWTH KINETICS OF 70-30 BRASS CONTAINING MN

Author(s)

ZAMANI AZAM | AKBARI GH.H. | Issue Writer Certificate

Keywords

70BQ4

BRASS ANNEALQ2

MANGANESEQ4

ACTIVATION ENERGYQ4

GRAIN GROWTHQ3

Abstract

In this research, 70-30 brass containing 0.25% Mn was prepared using a controlled atmosphere furnace and cast in a copper mould. Samples with 5×10×50 mm dimensions were cold rolled in order to reach 65% reduction. Then specimens were isothermally annealed at three different temperatures (600, 700 and 800oC) with different holding times between 2-60 minutes and were then cooled in 20oC water. Microstructural studies were executed using optical microscope. The average grain area of 200-450 grains was measured using Clemex image analyzer software. Results showed that addition of Mn to 70-30 brass had an impact on grain boundaries atmosphere and also decreased its ACTIVATION ENERGY and consequently accelerated GRAIN GROWTH. Calculation of growth ACTIVATION ENERGY within 500 and 700oC showed that growth ACTIVATION ENERGY of Mn free brass was 171 kJ/mol while that for Mn containing alloy was 22.35 kJ/mol.

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APA: Copy

ZAMANI, AZAM, & AKBARI, GH.H.. (2009). GRAIN GROWTH KINETICS OF 70-30 BRASS CONTAINING MN. ADVANCED PROCESSES IN MATERIALS, 2(7), 33-38. SID. https://sid.ir/paper/172592/en

Vancouver: Copy

ZAMANI AZAM, AKBARI GH.H.. GRAIN GROWTH KINETICS OF 70-30 BRASS CONTAINING MN. ADVANCED PROCESSES IN MATERIALS[Internet]. 2009;2(7):33-38. Available from: https://sid.ir/paper/172592/en

IEEE: Copy

AZAM ZAMANI, and GH.H. AKBARI, “GRAIN GROWTH KINETICS OF 70-30 BRASS CONTAINING MN,” ADVANCED PROCESSES IN MATERIALS, vol. 2, no. 7, pp. 33–38, 2009, [Online]. Available: https://sid.ir/paper/172592/en

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