Study of a hot-pressed sintering preparation of Ti(C7N3)-based composite cermets materials and their performance as cutting tools

Zou, Bin; Zhou, Huijun; Xu, Kaitao; Huang, Chuanzhen; Wang, Jun; Li, Shasha

doi:10.1016/j.jallcom.2014.05.150

Cited by 30 publications

(5 citation statements)

References 20 publications

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“…Yang et al [ 148 ] developed a novel hybrid machining process that combined laser-induced diamond graphitization with precision grinding to attain high-quality CVD diamond micro-milling tools. Zou et al [ 149 ] presented a micro-milling investigation of Ti(C 7 N 3 )-based cermet tools developed in-house, taking into account the wear forms and wear mechanisms [ 150 ]. Their results showed that adhesive wear and microchipping were the main wear mechanisms of the major and minor cutting edges, respectively.…”

Section: Process Inputsmentioning

confidence: 99%

Precision micro-milling process: state of the art

2020

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Micro-milling is a precision manufacturing process with broad applications across the biomedical, electronics, aerospace, and aeronautical industries owing to its versatility, capability, economy, and efficiency in a wide range of materials. In particular, the micro-milling process is highly suitable for very precise and accurate machining of mold prototypes with high aspect ratios in the microdomain, as well as for rapid micro-texturing and micro-patterning, which will have great importance in the near future in bio-implant manufacturing. This is particularly true for machining of typical difficult-to-machine materials commonly found in both the mold and orthopedic implant industries. However, inherent physical process constraints of machining arise as macro-milling is scaled down to the microdomain. This leads to some physical phenomena during micro-milling such as chip formation, size effect, and process instabilities. These dynamic physical process phenomena are introduced and discussed in detail. It is important to remember that these phenomena have multifactor effects during micro-milling, which must be taken into consideration to maximize the performance of the process. The most recent research on the micro-milling process inputs is discussed in detail from a process output perspective to determine how the process as a whole can be improved. Additionally, newly developed processes that combine conventional micro-milling with other technologies, which have great prospects in reducing the issues related to the physical process phenomena, are also introduced. Finally, the major applications of this versatile precision machining process are discussed with important insights into how the application range may be further broadened.

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Section: Process Inputsmentioning

confidence: 99%

Precision micro-milling process: state of the art

2020

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“…Additionally, some studies [65,69,70] reported on the beneficial effect of WC on the wettability between the interested phases producing finer microstructure and higher mechanical behavior, but at the same time due to the WC low oxidation temperature it has a negative influence on its cutting performance, particularly in high speed machining. In such cases, it is suitable to substitute, partially or completely, WC particles with TaC [71] as stated also in [69,[70][71][72]. Nanocrystalline cemented carbides obtained through the pulse plasma sintering process compared to the standard one produced by Hot isostatic pressing reveals higher hardness and higher relative density as illustrated in [73].…”

Section: Hard Metals: Overview and Some Propertiesmentioning

confidence: 99%

Manufacturing, Composition, Properties and Application of Sintered Hard Metals

Peter¹,

Rosso²

2017

Powder Metallurgy - Fundamentals and Case Studies

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Among other materials, hard metals represent an important family of functional materials. They show properties that are combinations of those of their constituents. The general idea while using hard metals is to exploit their excellent properties in terms of hardness, toughness, wear resistance, and chemical stability. These characteristics made hard metals as promising candidate for use as a cutting tool, which constitutes their main area of application. Depending on the particular use, the most important properties can be achieved: (i) by properly selecting the constituents made up the whole composition, (ii) by varying the relative composition of the phases, or (iii) by applying a suitable hard metal coating layer on the top of the cutting tool. This chapter presents a general overview of the actual scenario concerning different tool materials, including a short history and description of state-of-the-art techniques as regards their composition, their manufacturing routes and their most important properties. Some results of the own research in this field are carried out during the years will integrate this part.

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“…Sinterability and thermal shock resistance were improved by addition of secondary carbides such as Mo 2 C, WC, NbC, ZrC in TiC/TiCN composite [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%