On the origin of tellurium corrosion resistance of hot-rolled GH3535 alloy

Tellurium Corrosion of Type 304/304L Stainless Steel, Iron, Chromium, and Nickel in High-Temperature Liquid Sodium

“…The Te-induced pitting characteristics reveal a preference for attacking Ni and Fe substrates over Cr substrate. Similar phenomena have been found in previous studies, as aforementioned, in which Te reacted with Ni and Fe [7,8], while its effects on Cr were limited by the formation of Cr3Te4 scale [9]. Metals would react with Te, forming tellurides, and the thermodynamic stability of the tellurides, Cr3Te4, TeFe, and NiTe, can be ranked from more to less stable as follows: Cr3Te4, TeFe, and NiTe.…”

“…Jia et al [8] observed the formation of reaction products containing Ni 3 Te 2 , when solid Te was in contact with pure Ni, with the depth of Te penetration increasing with rising temperatures from 773 K to 1273 K. At temperatures between 773 K and 1173 K, Te diffusion into Ni predominantly occurred along grain boundaries. Similarly, in Ni-based alloys with trace alloying elements, Wu et al [9] noted the formation of telluride scales on the alloy surface when in contact with solid Te, accompanied by Te diffusion along grain boundaries and the formation of surface cracks. In these cases, Te enrichment was observed with M 6 C carbides rather than at grain boundaries.…”

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

“…According to the XRD results (Fig. 6) and previous reports 40,41 , the carbide precipitated at the GBs of the Hastelloy N under the 700 °C service state was determined to be M 6 C. The EPMA results of the carbides precipitated at the GBs are shown in Supplementary Table 2.…”

Effect of Heat Treatment on Microstructure and Properties of Improved 40CrNi2Si2MoV Steel

“…M 6 C readily induces precipitation through deformation and produces high dislocation density in steel during rolling. [ 18,19 ] After annealing at a suitable temperature, the strengthening mechanisms of ultrahigh‐strength steel can be coordinated to achieve high strength with relatively little loss of elongation.…”