Manufacturing and High Temperature Mechanical Properties of Inconel 713C by Using Metal Injection Molding

Abstract

Inconel 713C alloy was tried to manufacture by using MIM(Metal Injection Molding) process. The high-temperature mechanical properties of MIMed Inconel 713C were also investigated. Processing defects such as pores and binders could be observed near the surface. Tensile tests were conducted from room temperature to 900°C. The result of tensile tests showed that this alloy had similar or somewhat higher strengths (YS: 734 MPa, UTS: 968 MPa, elongation: 7.16 % at room temperature) from RT to 700°C than those of conventional Inconel 713C alloys. Above 800°C, however, ultimate tensile strength decreased rapidly with increasing temperature (lower than casted Inconel 713C). Based on the observation of fractography, initial crack was found to have started near the surface defects and propagated rapidly. The superior mechanical properties of MIMed Inconel 713C could be obtained by optimizing the MIM process parameters.

Metal injection moulding of nickel-based superalloy CM247LC*

“…As it is reported in literature, the sintering temperature of metal injection moulded nickel-based superalloys has to be close or even slightly above the solidus temperature of the respective alloy. [3][4][5][6][7][8] For this reason, dilatometry measurements were performed in a temperature range of 1270 to 1325°C to investigate the sintering behaviour of MIM brown parts and to find suitable sintering temperatures.…”

“…Over the last decade MIM capability of several nickel-based superalloys like Inconel 625, Inconel 713, Inconel 718, Nimonic 90, Udimet 720 and MAR-M-247 has been investigated. [3][4][5][6][7][8] The studies so far showed promising results, i.e. good mechanical properties at high temperatures as well as good hightemperature oxidation behaviour have been reported.…”

“…good mechanical properties at high temperatures as well as good hightemperature oxidation behaviour have been reported. [3][4][5][6][7][8] In the present paper, the feasibility of manufacturing parts from nickel-based superalloy CM247LC via MIM was investigated with the particular aim to determine an optimum sintering temperature range.…”

Solidification Characterization of K418 Alloy Powders Fabricated by Argon Gas Atomization

“…There is a continuous demand for shifting the operating temperature to higher values, especially in the automotive and aircraft industry, combined with the need of cost-effective mass production of the respective parts [1]. K418 alloy is a precipitation hardening-type alloy of Ni-Cr-Al-Mo-Nb composition with excellent high temperature mechanical properties, castability, oxidation resistance and thermal fatigue resistance [2].…”