Никел сплав от сплав с висока температура
Никел на базата на никел
High temperature alloy refers to a type of metal material based on iron, nickel and cobalt, which can work for a long time at high temperature above 600℃and under certain stress, and has high high temperature strength, good oxidation resistance and hot corrosion resistance, good fatigue performance and fracture toughness and other comprehensive properties. It is called superalloy in Europe and the United States. It is usually used for parts that Работете дълго време при висока температура (600-1200 градус) и сложни условия на стрес .
Nickel-based alloys are currently the most widely used high-temperature alloys, mainly used in high temperature, strong acid or strong alkali, strong oxidation and other working environments. Its development and use began in the late 1930s, and it was developed against the background of the emergence of jet aircraft that put higher requirements on the performance of high-temperature alloys. This article will introduce nickel-based alloys От следните аспекти .
1. типове
Според изпълнението:
Nickel-based corrosion-resistant alloys: The main alloying elements are copper, chromium, and molybdenum. It has good comprehensive properties and can resist various acid corrosion and stress corrosion. The main ones are nickel-copper (Ni-Cu) alloy (monel alloy), nickel-chromium (Ni-Cr) alloy (nickel-based устойчива на топлина сплав, инкололна, серия на Inconel), никел-молибден (Ni-Mo) сплав (серия Hastelloy B), никел-хром-молибден (Ni-CR-MO) сплав (главно Hastelloy C Series) и т.н. сплави .
Никел-устойчива на износване сплав: Основните легиращи елементи са хром, молибден, волфрам, а също така съдържат малко количество ниобий, тантал и индий . В допълнение към износващата устойчивост, тя също има добра устойчивост на окисляване, устойчивост на устойчивост и приветствие ....
Nickel-based precision alloy: including nickel-based soft magnetic alloy, nickel-based precision resistance alloy and nickel-based electric heating alloy. The most commonly used soft magnetic alloy is Permolite alloy containing about 80% nickel. It has high maximum permeability and initial permeability, low coercivity, and is an important core material in the electronics industry. The main alloying elements of nickel-based precision resistance alloy are chromium, aluminum and copper. This alloy has high resistivity, low resistivity temperature coefficient and good corrosion resistance, and is used to make resistors. Nickel-based electrothermal alloy is a nickel alloy containing 20% chromium. It has good oxidation resistance and Корозионна устойчивост и може да се използва за дълго време при 1000-1100 градус .
Nickel-based memory alloy: A nickel alloy containing 50 (at)% titanium, with a recovery temperature of 70℃and good shape memory effect. A small change in the ratio of nickel and titanium can change the recovery temperature within the range of 30-100℃.
