Preparation of MIM213 turbine wheel with hollow internal structure

Lin, Zhang; Li, Dan; Chen, Xiaowei; Yang, Feifei; Wang, Jingying; Chen, Bin; Ma, Xinfang; Qu, Xuanhui

doi:10.1016/j.matdes.2015.07.030

Cited by 2 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The alloy K213 is a precipitation-hardened Fe–Ni–Cr-based superalloy. It is widely used in the manufacture of supercharged turbine and gas turbine blades because of its excellent high-temperature mechanical properties, corrosion resistance, and oxidation resistance [ 1 , 2 , 3 , 4 ]. However, the service performance of superalloy parts obtained by traditional casting technology is affected by the low degree of alloy purification due to the difficulty of controlling impurity gases [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of the Microstructure, Mechanical Properties, and Corrosion Resistance of the K213 Superalloy after Conventional Casting and Selective Laser Melting

Wang

Sui

et al. 2023

Materials

View full text Add to dashboard Cite

K213 superalloy was fabricated by conventional casting and selective laser melting (SLM). The microstructures of the two samples were examined, and the mechanical properties and corrosion resistance of these two kinds of K213 alloy were comparatively studied. The results show that segregation of Ti occurs at the grain boundaries of the as-cast alloy, resulting in the formation of MC carbide. Many microcracks were formed in the SLM sample. Premature fracture of the as-cast alloy is caused by the precipitation of the harmful phase (Ti, Mo, Nb)C (MC). The MC carbides and microcracks in the as-cast and SLM alloys, respectively, induce tensile fracture. In comparison, the strength of the SLM sample is greater, while the elongation of the as-cast sample is greater. The oxidation resistance of the SLM sample is better at a high temperature of 800 °C. This is due to the relatively uniform composition and microstructure of the SLM alloy. However, the corrosion rate of the SLM alloy is accelerated during the electrochemical immersion corrosion process due to the existence of microcracks.

show abstract