Topic
Forging
About: Forging is a research topic. Over the lifetime, 27329 publications have been published within this topic receiving 148197 citations.
Papers published on a yearly basis
Papers
More filters
15 Jan 1999-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the evolution during heat treatment of the as-forged microstructure of the high strength superalloy UDIMET 720Li has been studied and the results have implications for the gas turbine manufacturers.
Abstract: The evolution during heat treatment of the as-forged microstructure of the high strength superalloy UDIMET 720Li has been studied. Particular emphasis has been placed on the characterisation of γ ′ precipitation kinetics using optical and transmission electron microscopies (TEM) and subsequent image analysis. The observations are interpreted using thermodynamic, phase transformation and precipitate hardening theories. The results have implications for the gas turbine manufacturers. Through a better understanding of the evolution of the microstructure during ageing, a heat treatment of 24 h at 700°C is proposed, which is believed to be optimal. This allows full advantage to be taken of the properties of the alloy, whilst reducing the costs and time associated with the heat treatment schedules. Moreover, the data presented allows the variation in properties across a U720Li forging to be estimated.
341 citations
332 citations
TL;DR: In this article, the authors used cryomilling and subsequently quasi-isostatic (QI) forging processes to prepare bulk dense multi-modal and bimodal NSNi withtensileductility of 42% and 49%, respectively.
Abstract: In this Communication, we use cryomillingand subsequently quasi-isostatic (QI) forging processes(formerly known as Ceracon forging), to prepare bulk densemultimodalandbimodalNSNiwithtensileductilityof42%and49%,andyieldstrengthsof457and312MPa,respectively.Thiscombinationofstrengthandductilityismuchsuperiortothoseofthe NS Ni prepared by electro-deposition (ED),
328 citations
TL;DR: Wang et al. as mentioned in this paper summarized relevant studies on metal material fabrication through selective laser melting (SLM) and compared with characteristics described in other reported studies, microstructure, properties, dimensional accuracy, and application of SLM.
Abstract: Selective laser melting (SLM), as one of the additive manufacturing technologies, is widely investigated to fabricate metal parts. In SLM, parts are manufactured directly from powders in a layer-by-layer fashion; SLM also provides several advantages, such as production of complex parts with high three-dimensional accuracy, compared with other additive manufacturing technologies. Therefore, SLM can be applied in aeronautics, astronautics, medicine, and die and mould industry. However, this technique differs from traditional methods, such as casting and forging; for instance, the former greatly differs in terms of microstructure and properties of products. This paper summarizes relevant studies on metal material fabrication through SLM. Based on a work completed in Huazhong Univ. Sci Tech., Rapid Manuf. Center (HUST-RMC) and compared with characteristics described in other reported studies, microstructure, properties, dimensional accuracy, and application of SLM are presented.
311 citations
TL;DR: In this article, the effect of phase transformations and chemical driving forces due to phase imbalances between different heat treatment steps and compares the mechanical properties to those obtained for forged and heat-treated material.
302 citations