Joining of dissimilar metals is required for numerous applications in industries such as chemical, energy and automotive. It challenging due to differences melting point, density, thermal expansion the being joined. Common welding techniques involve limiting solidification a narrow area leading high stresses potentially brittle intermetallic phases. Furthermore, geometric complexity these welde...

Abstract Maraging steels are a class of low-carbon ultra-high-strength martensitic steels. Due to their excellent weldability, these have been widely applied for laser-based additive manufacturing (AM). MAR-60HRC is newly developed maraging grade AM with nominal chemical composition 13.0Ni-15.0Co-10.0Mo-0.2Ti, Fe bal. (wt%), capable achieving hardness levels ~ 740 HV. Alternatively, 18Ni300 com...

Fatigue crack growth (FCG) has been studied assuming that ∆Keff is the driving force. However, effect of ligament on FCG rate not clear. Experimental-numerical work was developed in 18Ni300 maraging steel considering different load blocks with same initial ∆K. No observed experimentally, which explained by inexistence closure effects. In numerical transient effects were for plane stress state, ...

Relevance. High-strength steels are increasingly in demand modern industry for various applications. Maraging the primary material manufacture of most aircraft parts as well machine-building components. This type is low-carbon and rich nickel, which forms martensite when cooled demonstrates properties such high hardness, wear resistance, etc. The hardening process main factor affecting function...

The bar properties (elastic modulus, density, Poisson’s ratio, and sound speed) necessary for exploiting impact tests were calibrated via two methods called the 1D method (which combines iterative dispersion correction with approximation) 3D resorts to simulation-based reverse engineering of strain profile in a circular bar). cross-verified one another maraging steel 19.1 mm diameter. This pape...

The design features of diaphragm compressors are discussed in this article. influence operat-ing factors on the durability and reliability a made corrosion-resistant maraging steel is investigated. It shown that to increase operational compressor's elements; it recommended use material, structure which contains certain amount work-hardened retained austenite. This makes possible undergo additio...

The mechanical behaviour of as-built DED-produced 18Ni300 Maraging steel was studied by manufacturing a wall-like structure from which three different specimen types were obtained: specimens in the loading direction same as printing (vertical), these two directions perpendicular (horizontal), and bimetallic interface between AISI 1045 substrate tested. yield strength produced samples 987.9±34.2...

The quality of metallic additive manufacturing outputs is heavily dependent on the employed processing parameters. Hence, assessment and definition input variables appropriate to material in question vital importance, order optimise attainable properties minimise wasted feed stock failed trials. In this work, optimal parameters for 18Ni300 Maraging steel are found deposition an H13 substrate. A...

Maraging steels are used to produce tools by Additive Manufacturing (AM) methods such as Laser Metal Deposition (LMD) and Selective Laser Melting (SLM). Although it is well established that dense parts can be produced by AM, the influence of the AM process on the microstructure-in particular the content of retained and reversed austenite as well as the nanostructure, especially the precipitate ...