Effect of cold rolling on aging precipitation behavior and mechanical properties of Cu–15Ni–8Sn alloy

2020 ◽  
Vol 848 ◽  
pp. 156275 ◽  
Author(s):  
Zhongkai Guo ◽  
Jinchuan Jie ◽  
Jiaming Liu ◽  
Shipeng Yue ◽  
Shichao Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Precipitation Behavior ◽  
Aging Precipitation

Effect of Plastic Deformation on a Dispersion of Omega-Phase and Mechanical Properties of an Al-Cu-Mg-Ag Alloy

2014 ◽  
Vol 922 ◽  
pp. 189-194 ◽  
Author(s):  
Marat Gazizov ◽  
Ivan Zuiko ◽  
Rustam Kaibyshev
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Cold Rolling ◽  
High Yield ◽  
Moderate Increase ◽  
Coarse Particles ◽  
Secondary Phases ◽  
Omega Phase ◽  
Precipitation Behavior ◽  
Solution Treated

Effect of cold rolling prior to ageing on a dispersion of secondary phases and mechanical properties at room temperature for an Al-5.6Cu-0.72Mg-0.5Ag-0.32Mn-0.17Sc-0.12Zr (wt. %) alloy, which was solution treated and water quenched initially, was examined. It was shown that cold working leads to significant increase in density of lattice dislocations that induces the formation discrete agglomerates of the θ′-phase on the {100} planes. Strain of 7% provided increased aspect ratio (length to thickness) of plates that leads to moderate increase of strength. Imposing of higher strains leads to increased lattice dislocation density and the formation of deformation-induced boundaries. Precipitation of the coarse particles of secondary phases on these boundaries takes place. The high yield stress (YS) of 535 MPa and ultimate tensile strength (UTS) of 570 MPa, were attained after cold rolling with a reduction of 80% followed by ageing at 190°C for 2 h. The effect of plastic deformation prior to ageing on the precipitation behavior and strengthening of Al-Cu-Mg-Ag alloy is discussed.

scholarly journals Relationship between mechanical properties and age-hardening behavior around grain boundaries of Al-Mg-Si alloy

2020 ◽  
Vol 326 ◽  
pp. 03002
Author(s):  
Takuya Hashimoto ◽  
Ken-ichi Ikeda ◽  
Seiji Miura
Keyword(s):  
Mechanical Properties ◽  
Rotation Angle ◽  
Coincident Site Lattice ◽  
Age Hardening ◽  
Precipitation Behavior ◽  
Site Lattice ◽  
Hardening Behavior ◽  
Aging Precipitation ◽  
Peak Aged ◽  
Electron Back Scattered Diffraction

Nanoindentation tests were conducted near the grain boundary (GB) of the Al-Mg-Si alloy, and the influence of GB character on the aging precipitation behavior and the mechanical properties was confirmed. After obtaining the GB characters by electron back scattered diffraction (EBSD) analysis, nanoindentation tests were carried out on under-aged, peak-aged, and over-aged samples. And then, the indentation areas were observed by back scattered electrons imaging (BSE) in order to identify indentation positions with respect to the GB. In this study, for the GB character, focusing on the rotation angle, the high-angle GB (HAGB) and the low-angle GB (LAGB) were selected. In addition, coincident site lattice GBs (CSL) were selected as the special GB. In the 180°C under-aged samples, the nano-hardness near GB is higher than that far from GB, while 180°C peak-aged samples, the nano-hardness is lower than that far from GB. Then the range near the GB where the hardness changes was larger at HAGB than at LAGB and CSL3. This suggests that the GB character affects the aging precipitation behavior and mechanical properties.

Precipitation Behavior of Carbide and its Effect on the Mechanical Properties of a Novel Fe60Co10Cr10Ni10Mo5V5 Medium-Entropy Alloy

JOM ◽  
2021 ◽  
Vol 73 (2) ◽  
pp. 668-678
Author(s):  
Hebin Wang ◽  
Da Hong ◽  
Longgang Hou ◽  
Ping Ou ◽  
Li Shen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Precipitation Behavior
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