Design and Processing of High-Performance Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 2104

Special Issue Editor


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Guest Editor
High Temperature Materials Research Institute, Central South University, Changsha, China
Interests: hot forging; microstructure; simulation, mechanical property

Special Issue Information

Dear Colleagues,

Material processing and heat treatment are the key factors determining the properties of metal materials. According to the different requirements of application, various processing and heat treatment technologies have been developed accordingly. Metallic materials produced by processing such as cold working or hot working and subsequent heat treatment are widely used in automobile, construction, energy, ocean, electric power and other economic pillar industries.

With the continuous improvement of users' requirements for the performance of materials in a variety of environments, research on deformation and microstructure evolution rules during processing and heat treatment has become increasingly important, promoting the continuous upgrading of metal forming and heat treatment technology and meeting the development trend of low energy consumption and low pollution in the material processing industry and people's demand for a good ecological environment. In addition, with the development of intelligent and digital technology, intelligent control of metal material rolling and heat treatment processes is imminent.

This Special Issue focuses on the latest scientific and technological progress related to the material processing and heat treatment of metallic materials. Topics of interest include the research and development of new process and new equipment, development of advanced heat treatment technology, numerical simulation of material forming and heat treatment, microstructure and performance control of metal material forming and heat treatment, development of new products based on processing and heat treatment, etc.

Prof. Dr. Yunping Li
Guest Editor

Manuscript Submission Information

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Keywords

  • casting
  • forming
  • heat treatment
  • composition
  • hot working
  • microstructure
  • simulation
  • mechanical property
  • alloy
  • metallic materials

Published Papers (2 papers)

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Research

15 pages, 10749 KiB  
Article
Effects of Ti and N Contents on the Characteristic Evolution and Thermal Stability of MC Carbonitrides Holding at 1250 °C in H13 Die Steel
by Xiaolin Sun, Shengyong Gao, Wulin Shang, Qingyuan Zhong, Gaoyang Song and Shuo Zhao
Metals 2024, 14(3), 317; https://doi.org/10.3390/met14030317 - 10 Mar 2024
Viewed by 728
Abstract
The evolution of MC-type primary carbonitrides (M=V, Ti, Mo; C=C, N) in terms of morphology, quantity, size and composition was systematically investigated in commercial H13 die steels with different Ti and N contents during thermal holding at 1250 °C for 5 h to [...] Read more.
The evolution of MC-type primary carbonitrides (M=V, Ti, Mo; C=C, N) in terms of morphology, quantity, size and composition was systematically investigated in commercial H13 die steels with different Ti and N contents during thermal holding at 1250 °C for 5 h to 15 h. Results showed that the mean size and quantity of carbonitrides in the four samples had decreased during thermal holding. However, the mean size and quantity of MC carbonitrides had increased with increasing Ti contents when held at 1250 °C while the addition of N increased the quantity but decreased the sizes of the stable MC carbonitrides. It was concluded that the compact carbonitrides could be decomposed and changed into a fishnet structure when held at 1250 °C, especially in samples #1 and #2 containing lower Ti and N contents. The decomposition mechanism was illustrated considering the changes in Ti and Fe elements in carbonitrides. On the basis of the thermodynamic model, the thermal stability of (Tix,V1−x)(Cy,N1−y), with a larger x value, in samples #3 and #4 containing more Ti and N contents was generally higher than those in samples #1 and #2. To control the Ti-containing MC carbonitrides, the low Ti and N contents and high holding temperature should be taken into consideration. Full article
(This article belongs to the Special Issue Design and Processing of High-Performance Metallic Materials)
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26 pages, 24609 KiB  
Article
Heterogenous Grain Nucleation in Al-Si Alloys: Types of Nucleant Inoculation
by Ehab Samuel, Hicham Tahiri, Agnes M. Samuel and Fawzy H. Samuel
Metals 2024, 14(3), 271; https://doi.org/10.3390/met14030271 - 24 Feb 2024
Cited by 1 | Viewed by 1142
Abstract
The objective of the current work is to establish, on the one hand, the conventional mechanisms of grain refining and, on the other hand, the effect of the refining-modification interaction in Sr-modified Al-Si alloys on the achieved grain refining and the modification of [...] Read more.
The objective of the current work is to establish, on the one hand, the conventional mechanisms of grain refining and, on the other hand, the effect of the refining-modification interaction in Sr-modified Al-Si alloys on the achieved grain refining and the modification of eutectic silicon. For this purpose, the hypereutectic alloy A390.1 (~17%Si) was used. Various grain refiners were used, namely, Al-10%Ti, Al-5%Ti-1%B, and Al-4%B. After the preparation of the liquid metal, several concentrations of these master alloys were added to the liquid bath according to the desired objective. The different melts prepared were heated at 750 °C and cast in a preheated graphite mold with a solidification rate of around 0.8 °C/s. The liquid metal was. The presence of strontium (added in the form of Al-10%Sr master alloy) and boron completely affects the microstructure of the alloy. An atom of Sr unites with 6 atoms of B to form a compound whose stoichiometric formula is of the SrB6 type, leading to a significant reduction in the modification. A strong relationship exists between the addition of B and the recovery level of Sr. The affinity between titanium and boron is stronger than the affinity between boron and strontium. Both B and TiB2 phase particles do not react with Si; it is only the Ti part of the Al-Ti-B master that forms (Al, Si)3Ti. Regardless of the amount of Si content in the alloy, the Al-4%B master alloy achieves the best grain refining compared to Ti-containing master alloys. Full article
(This article belongs to the Special Issue Design and Processing of High-Performance Metallic Materials)
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