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The effect of rare earth elements on Cr precipitations in a Cu-0.8WT%Cr alloyShuai, Gewang ; Zhang, Meng, živilski tehnolog ; Yan, YongliThe microstructural evolution of Cu-based alloys during aging was studied using a quantitative metallographic method. Samples were cut from ingots of Cu-0.8wt%Cr and Cu-0.8wt%Cr-RE alloys. These were ... solution treated at 1000 °C for 1.5 h and subsequently quenched in water, then separately aged at 480 °C for different durations. The microstructures were observed by optical microscope, and the characteristic geometric parameters of precipitated Cr phase, including volume fraction Vv, face density NA, mean diameter and roundness, were measured. These data provided more details about the process of aging. The results showed that precipitation of Cr phase occurred in the form of particles during aging. Rare earth elements promoted the precipitationof Cr phase and dispersed Cr particles. The phenomenon of overaging came earlier in Cu-Cr-RE than in Cu-Cr. In the present work, the optimal aging time at 480 °C was 2 hrs for the Cu-0.8wt%Cr-RE alloy and 3 hours for the Cu-0.8wt%Cr alloy.Vir: Image analysis & stereology : official journal of the International Society for Stereology. - ISSN 1580-3139 (Vol. 23, no. 2, jun. 2004, str. 137-141)Vrsta gradiva - članek, sestavni delLeto - 2004Jezik - angleškiCOBISS.SI-ID - 20714201
Avtor
Shuai, Gewang |
Zhang, Meng, živilski tehnolog |
Yan, Yongli
Teme
Chromium Alloys |
Copper |
Chromium |
Precipitation |
Particle Size |
X-Ray Diffraction |
Baker |
Delec, velikost |
Krom |
Kromove zlitine |
Precipitacija |
Rentgenski žarki, lomljenje |
metalografija |
precipitacija |
bakrove zlitine |
kromove zlitine
vir: Image analysis & stereology : official journal of the International Society for Stereology. - ISSN 1580-3139 (Vol. 23, no. 2, jun. 2004, str. 137-141)
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Shuai, Gewang | |
Zhang, Meng, živilski tehnolog | |
Yan, Yongli |
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