ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The α-phase in 60/40 brass added Si was investigated by transmission electron microscope (TEM)in order to understand the relationship between the ability of hardening during annealing and phasedecomposition. The ability of hardening ( Δ HV), which is the value of difference between themaximum hardness during annealing and the value of as-quenched sample, was obtainedmeasurement from the alloy. As a result, the Si-bearing alloy is higher in ΔHV than a base alloywithout Si. The α-phase in the Si-bearing alloy showed fringes in its TEM image like as stackingfaults, and extra reflected spots in its selected area diffraction pattern (SADP), which iscorresponding to the 9R structure. Streaks were also observed together with spots in its SADP.Extra reflected spots and streaks in SADP became weak or disappeared when the annealing timeincreased. After 600 ks annealing, SADP obtained from the α-phase could be indexed as FCC lattice.Change in chemical composition of α-phase was also measured by the energy dispersive X-rayspectroscopy (EDS)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.667.pdf
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