Water jet guided laser microdrilling of aerospace alloys: Correlation of material properties to process time and quality

2021 ◽  
Vol 33 (1) ◽  
pp. 012015
Author(s):  
Levent Subasi ◽  
Jeremie Diboine ◽  
Aydemir Gunaydin ◽  
Cansinem Tuzemen ◽  
Ozan Can Ozaner ◽  
...  
Author(s):  
C.L. Briant

Grain boundary segregation is the process by which solute elements in a material diffuse to the grain boundaries, become trapped there, and increase their local concentration at the boundary over that in the bulk. As a result of this process this local concentration of the segregant at the grain boundary can be many orders of magnitude greater than the bulk concentration of the segregant. The importance of this problem lies in the fact that grain boundary segregation can affect many material properties such as fracture, corrosion, and grain growth.One of the best ways to study grain boundary segregation is with Auger electron spectroscopy. This spectroscopy is an extremely surface sensitive technique. When it is used to study grain boundary segregation the sample must first be fractured intergranularly in the high vacuum spectrometer. This fracture surface is then the one that is analyzed. The development of scanning Auger spectrometers have allowed researchers to first image the fracture surface that is created and then to perform analyses on individual grain boundaries.


Author(s):  
Brian Ralph ◽  
Barlow Claire ◽  
Nicola Ecob

This brief review seeks to summarize some of the main property changes which may be induced by altering the grain structure of materials. Where appropriate an interpretation is given of these changes in terms of current theories of grain boundary structure, and some examples from current studies are presented at the end of this paper.


2018 ◽  
Author(s):  
M Sánchez Alonso ◽  
E Rodríguez Sánchez ◽  
E de la Santa Belda ◽  
P Olivencia Palomar ◽  
R Salmoral Luque ◽  
...  

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