Temperature and Orientation Dependence of Fracture Behavior of Directionally Solidified Duplex-Phase Crystals Composed of Ni3X-Type Intermetallic Compounds

Fracture behaviors of three directionally solidified (DS) duplex-phase alloys composed of Ni3Nb(D0a)/Ni3Al(L12), Ni6TaAl(D024)/Ni3Al(L12) and Ni3Ti(D024)/Ni3Si(L12) phases, respectively were investigated by three-point bending tests, focusing on temperature and orientation dependence. The temperature-toughness relation showed dissimilar curves depending on alloy. The increasing rate of fracture toughness was the highest in the Ni3Al/Ni3Nb alloy with fine lamellar structure and was the lowest in the Ni3Al/Ni6TaAl alloy with rod-like precipitates. The controlling mechanism for the temperature dependence of fracture behavior of Ni3Al/Ni3Nb alloys was discussed.

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Effect of Intermetallic Compounds on the Fracture Behavior of Mg/Al Laminated Composite Fabricated by Accumulative Roll Bonding

Rare Metal Materials and Engineering ◽

10.1016/s1875-5372(17)30010-3 ◽

2016 ◽

Vol 45 (9) ◽

pp. 2242-2245

Author(s):

Chang Hai ◽

Zheng Mingyi

Keyword(s):

Intermetallic Compounds ◽

Accumulative Roll Bonding ◽

Fracture Behavior ◽

Laminated Composite ◽

Roll Bonding

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Orientation dependence of fracture behavior of Ti3Al single crystals with D019 structure

Scripta Materialia ◽

10.1016/1359-6462(95)00645-1 ◽

1996 ◽

Vol 34 (7) ◽

pp. 1161-1169 ◽

Cited By ~ 26

Author(s):

Y. Umakoshi ◽

T. Nakano ◽

B. Ogawa

Keyword(s):

Single Crystals ◽

Fracture Behavior ◽

Orientation Dependence

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Mechanical Performance and Fracture Behavior of Recycled AA6061-T6 Alloy Melted from Aluminium Chips

International Journal of Manufacturing Materials and Mechanical Engineering ◽

10.4018/ijmmme.2017010101 ◽

2017 ◽

Vol 7 (1) ◽

pp. 1-17

Author(s):

Naveed Akhtar ◽

Razzaq Ahmed ◽

Muhammad Arfan ◽

Muhammad Noshad Ali

Keyword(s):

Mechanical Properties ◽

Intermetallic Compounds ◽

Fracture Behavior ◽

Mechanical Performance ◽

Sem Analysis ◽

Reverberatory Furnace ◽

Molten Bath ◽

Furnace Charge ◽

Mixed Nature

Aluminium chips were re-melted under the molten bath in a gas fired reverberatory furnace and superior quality recycled AA6061-T6 alloy was synthesized. The chips were added 5 to 20% by weight in the recycled alloy. The furnace charge included clean scrap of the same alloy (AA6061) along with the machining chips or tunings of mixed nature. The chips used in this study were mostly generated from lath/bore operations carried on homogenized billets. The fabricated alloy of each heat was characterized for microstructures, mechanical properties and fracture behavior. The results showed that the metallurgical and mechanical performance of the recycled alloy was comparable to the primary alloy. However, SEM analysis of the recycled alloy revealed a sizeable amount of Fe and Si containing intermetallic compounds such as AlFeSi, AlFeMg, and AlSiMg phases.

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