Properties of Nickel-based Super Alloys
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Wholesale gas prices in the Netherlands and the UK have risen 20 percent recently amid concerns about Russian supplies.
The EU plans to cut its dependence on Russian gas by two-thirds this year and stop importing Russian fossil fuels by 2027. Russia exported about 155 billion cubic meters of gas to the EU in 2021.
The US recently said it would try to supply 15bn cubic meters of LNG to the EU this year. U.S. LNG plants are running at full capacity, and analysts say much of the extra gas the U.S. sends to Europe comes from what should have been exported elsewhere.
The German government called Russia "an unreliable energy supplier". Even though the German government claimed that they have been preparing for the situation for a long time that Russia may stop sending gas one day, experts say it is hard for the EU to replace all of Russia's gas exports any time soon.
The supply and prices of many products in the global market like the Nickel-based Super Alloys will continue to be influenced by international situations.
The creep rupture strength can be a good indication that the creep rupture
life/γ-initial fraction diagram of each alloy series is different, but each
series may have a maximum value or exceed 75% (volume) in the vicinity. This
means that the creep rupture life depends partly on the hardening of the solid
solution and partly on the hardening of the γ-prime precipitation. When Cr in
γ'is replaced by W and Ta, the maximum solid solution hardening will be
achieved. In addition, in order to obtain maximum precipitation hardening, a
gamma prime fraction will be obtained. In some Ni-based superalloys, the
γ-primary fraction of the actual alloy at 1000ºC may be less than the design
Tensile properties The tensile properties of sample solutions aged under
various conditions at 900ºC have been observed. Obviously, these changes can be
well approximated by the linear function of the gamma prime fraction. The
results obtained from other series of alloys show that the linearity is
maintained in the range of γ-prime fraction of 50% to 80% (volume), which is
different from the case of creep rupture strength. The effect of solution
temperature is also linear. A higher solution temperature gives a higher yield
strength. The lower the solution temperature, the greater the tensile
elongation, but this trend no longer works below a certain temperature. The
solution treatment below 1080ºC has no beneficial effect on the tensile
elongation. For the effect of solid solution hardening and precipitation
hardening, it is obvious that W is the most effective method of solid solution
hardening, and Ta (a γ-primer forming agent) is less effective than W as a solid
solution hardening element.
The crucible test was used to evaluate the resistance to corrosion
resistance. A piece of alloy (diameter 6-8 mm, height 3-5 mm) in a salt mixture
(Na2SO4-25%NaCl) was kept in the air at 900ºC for 20 hours. After all the scale
is removed, the resistance is quantitatively determined by the metal loss. In
terms of morphology, thermal corrosion can be divided into three types. Type I:
Corrosion layer composed of Cr sulfide, Ni sulfide and porous oxide, Type II:
Thin and compact Cr2O3 corrosion layer, there is a small amount of sulfide or no
sulfide in the matrix, Type III: It is oxidized by three layers Corrosion layer
composed of Cr2O3, TiO2 and Al2O3 from the outside to the inside, a small amount
of chromium-rich sulfide is dispersed in the matrix. Regression analysis was
carried out on 42 alloys that produced Type I corrosion. The results show that
Hf-doped alloys with high Cr and Ti content (the most preferred in γ-primary
precipitation hardening alloys), and the addition of W, Ta or Mo is an essential
element to increase high-temperature strength. Extremely harmful to thermal
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The COVID-19 pandemic has affected economies and chemical companies in many countries around the world. Measures such as extending holidays and resuming work were taken to control the development of the epidemic, and the normal operation of some chemical enterprises was also affected to some extent.
We provides high quality Nickel-based Super Alloys with reasonable price. “In order to feedback to old customers, the company is still in full operations to provide Nickel-based Super Alloys with competitive price.” said Olina, the sales manager.
Chemical production is highly dependent on transportation, and the epidemic affects the circulation of people and materials first. Predictably, none of this is rosy. In densely populated areas with large mobility, the situation of epidemic prevention and control becomes more severe in the later stage. If you are looking for the Nickel-based Super Alloys, feel free to contact us.