N07718 (Inconel718 bolt)
Category: Hexagonal Bolt
Head shape: Outer hexagon
Tolerance: 6G,
Material: N07718
Performance level: 8.8
Specifications: M6~M100
Head to edge length: 10-120 (mm)
Head thickness: 6.6-60 (mm)
Total length: 30-800 (mm)
Inconel718 alloy has the following characteristics:
1. Workability
2. High tensile strength, fatigue strength, creep resistance, and fracture strength at 700 ℃
3. Has high antioxidant activity at 1000 ℃
4. Stable chemical properties at low temperatures
5. Good welding performance
The metallographic structure of Inconel718: The 718 alloy has an austenitic structure, and the γ "phase generated after precipitation hardening gives it excellent mechanical properties. The δ phase generated at the grain boundary during heat treatment gives it optimal plasticity.
Corrosion resistance of Inconel718: Whether in high or low temperature environments, 718 alloy has excellent resistance to stress corrosion cracking and pitting. 718 alloy has particularly excellent oxidation resistance at high temperatures.
Inconel718 is widely used in various high demand applications due to its high temperature strength at 700 ℃, excellent corrosion resistance, and ease of processing. At high temperatures, the grain boundaries of alloys are weak links, and adding trace amounts of boron, dislocations, and rare earth elements can improve the strength of grain boundaries. This is because rare earth elements can purify grain boundaries, boron and misfit atoms can fill grain boundary vacancies, reduce the diffusion rate of grain boundaries during creep, suppress the aggregation of grain boundary carbides, and promote the second phase spheroidization of grain boundaries. In addition, adding an appropriate amount of lead to casting alloys can also improve the strength and plasticity of grain boundaries. Chain like carbides can also be formed at grain boundaries or bent grain boundaries through heat treatment to improve plasticity and strength.
At high temperatures, the grain boundaries of Inconel718 alloy are weak links, and adding trace amounts of boron, dislocations, and rare earth elements can improve the strength of grain boundaries. This is because rare earth elements can purify grain boundaries, boron and misfit atoms can fill grain boundary vacancies, reduce the diffusion rate of grain boundaries during creep, suppress the aggregation of grain boundary carbides, and promote the second phase spheroidization of grain boundaries. In addition, adding an appropriate amount of lead to casting alloys can also improve the strength and plasticity of grain boundaries. Chain like carbides can also be formed at grain boundaries or bent grain boundaries through heat treatment to improve plasticity and strength.
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