Breaking the strength-ductility paradox in advanced nanostructured Fe-based alloys through combined Cu and Mn additions

2020 ◽  
Vol 186 ◽  
pp. 213-218
Author(s):  
H.J. Kong ◽  
T. Yang ◽  
R. Chen ◽  
S.Q. Yue ◽  
T.L. Zhang ◽  
...  
Keyword(s):  
Mn Additions

Microstructure of Hypereutectic Mg-Si Alloy with Sn, Al and Mn Additions

2015 ◽  
Vol 229 ◽  
pp. 65-70 ◽  
Author(s):  
Tomasz Rzychoń
Keyword(s):  
Solid Solution ◽  
Chinese Script ◽  
Mn Additions

In the present study, the microstructure of Mg-5Si alloys with tin, aluminum and manganese was investigated. The microstructure of Mg-5Si alloy consists of the primary coarse Mg2Si phase, α-Mg solid solution and eutectic α-Mg + Mg2Si in which the eutectic Mg2Si phase solidifies in the form of Chinese script particles. The Mg2Sn phase and α-Mg solid solution with tin appear in the microstructure, when 7 wt.% of Sn was added to the Mg-5Si alloy. Aluminum dissolve in the α-Mg matrix and participates in the formation of Al2Sn phase. The addition of manganese promotes the formation of Mn5Si3 compound.

Effect of Ni and Mn Additions on the Ambient and High-Temperature Performance of Zr-Containing Al–Si–Cu–Mg-Based Alloys: Role of Precipitation Hardening

2018 ◽  
Vol 12 (4) ◽  
pp. 825-838 ◽  
Author(s):  
Loay Alyaldin ◽  
M. H. Abdelaziz ◽  
Agnes M. Samuel ◽  
Herbert W. Doty ◽  
Salvador Valtierra ◽  
...  
Keyword(s):  
High Temperature ◽  
Precipitation Hardening ◽  
Temperature Performance ◽  
Mn Additions

Effects of manganese addition on microstructure and press formability of hot-rolled Mg–Al–Zn alloy sheets

2008 ◽  
Vol 23 (11) ◽  
pp. 3029-3039 ◽  
Author(s):  
Xinsheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Az31 Alloy ◽  
Solubility Limit ◽  
Solid Solubility Limit ◽  
Homogeneous Microstructure ◽  
Texture Intensity ◽  
Differential Speed Rolling ◽  
Hot Rolled ◽  
Mn Additions ◽  
Zn Alloy ◽  
Differential Speed

Differential speed rolling (DSR) has been carried out on AZ31 alloys with Mn additions of 0 to 0.6 wt% for investigating the effects of Mn on microstructure, texture, mechanical properties, and formability. The Al–Mn compounds were formed in the sample with a Mn addition of only 0.2 wt% because of its low solid-solubility limit. There were tiny differences among the DSR-processed AZ31 alloys with different Mn contents, while the AZ31 alloy without Mn addition exhibited a more homogeneous microstructure, a weaker basal texture intensity, and a much superior formability together with a larger likelihood of grain growth during annealing. The Mn dissolving in αMg matrix exerted a far stronger influence on the resulting properties compared with those existing in form of the Al–Mn compounds. The Mn solute atoms induced an increase in c/a ratio, which may suppress activity of nonbasal slips and in turn degrade the deformation capability.

scholarly journals Effect of Small Additions of Cr, Ti, and Mn on the Microstructure and Hardness of Al–Si–Fe–X Alloys

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 136 ◽  
Author(s):  
Víctor Aranda ◽  
Ignacio Figueroa ◽  
Gonzalo González ◽  
J. García-Hinojosa ◽  
Gabriel Lara-Rodríguez
Keyword(s):  
Vickers Microhardness ◽  
Melting Furnace ◽  
Alloy System ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Microstructural Refinement ◽  
X Ray ◽  
Arc Melting ◽  
Elemental Chemical Analysis ◽  
Mn Additions

The Al–Si–Fe system has drawn the attention of the scientific community due to its capacity to replace parts in several manufacturing industries, as this alloy system is very sensitive to small additions of transition metals. Therefore, the aim of this work is to study the effect of Cr, Ti, and Mn additions in the Al–20Si–5Fe (wt. %) alloy and to study the modification of the iron intermetallic and the microstructural refinement through the formation of secondary phases. Al–20Si–5Fe–X (X = Cr, Mn and Ti at 1.0, 3.0, and 5.0 wt. %) alloy ingots were prepared by arc melting furnace. The elemental chemical analysis was performed by X-ray fluorescence spectrometry (XRF). The microstructure of all samples was investigated by scanning electron microscopy and X-ray diffraction. Finally, microhardness was measured in order correlate the hardness with the formation of the different compounds. The highest hardness was found for the alloy with the 5 wt. % Cr. The addition of Ti and Mn raised the hardness by ~35 HVN (Vickers microhardness) when compared to that of AlSiFe master alloy. Important changes were also observed in the microstructure. Depending on the Cr, Ti, and Mn additions, the resulting microstructure was dendritic (CrFe), acicular (Ti5Si3), and “bone like” (Mn0.2Fe0.8), respectively.

Predicting the Formation of Intermetallic Phases in the Al-Si-Fe System with Mn Additions

2017 ◽  
Vol 38 (3) ◽  
pp. 298-304 ◽  
Author(s):  
Lucas Barcelos Otani ◽  
Juliano Soyama ◽  
Guilherme Zepon ◽  
André Costa e Silva ◽  
Claudio Shyinti Kiminami ◽  
...  
Keyword(s):  
Intermetallic Phases ◽  
Mn Additions

Effects of Ca and Mn Additions on the Microstructure and Dielectric Properties of (Bi0.5Na0.5)TiO3 Ceramics

2011 ◽  
Vol 40 (11) ◽  
pp. 2234-2239 ◽  
Author(s):  
Y. Yuan ◽  
E.Z. Li ◽  
B. Li ◽  
B. Tang ◽  
X.H. Zhou
Keyword(s):  
Dielectric Properties ◽  
Mn Additions

scholarly journals Influence of Sr and Mn Additions on Intermetallic Compound Morphologies in Al-Si-Cu-Fe Cast Alloys

2003 ◽  
Vol 44 (12) ◽  
pp. 2611-2616 ◽  
Author(s):  
Peyman Ashtari ◽  
Hiroyasu Tezuka ◽  
Tatsuo Sato
Keyword(s):  
Intermetallic Compound ◽  
Cast Alloys ◽  
Mn Additions

The relation between Mn additions, microstructure and corrosion behavior of new wrought Mg-5Al alloys

2018 ◽  
Vol 145 ◽  
pp. 101-115 ◽  
Author(s):  
Polina Metalnikov ◽  
Guy Ben-Hamu ◽  
Yael Templeman ◽  
Kwang Seon Shin ◽  
Louisa Meshi
Keyword(s):  
Corrosion Behavior ◽  
Mn Additions
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