Artikel Jurnal :: Kembali

Artikel Jurnal :: Kembali

Effect of annealing temperature on microstructure and mechanical properties of ultrafine grained brass produced by equal channel angular pressing / Suryadi, Andi Pramana Kusuma, Amin Suhadi, Dedi Priadi, Eddy S. Siradj

Suryadi; Adji Kusumadjati, examiner ([Publisher not identified] , 2017)

 Abstrak

The present
study investigated the mechanical properties and microstructure of ultrafine
grained (UFG) brass processed by four passes of equal channel angular pressing
(ECAP) and annealed at elevated temperatures. The mechanical properties of all
samples were assessed using tensile and micro-hardness tests. Microstructure
analysis was performed using optical microscopy (OM) and scanning electron
microscopy (SEM). Ultimate tensile strengths (UTS) and yield strengths (YS) of
878 and 804 MPa, respectively, ductility of 15%, and hardness of 248 HV were
obtained for samples processed by four passes of ECAP with equivalent true
strain of 4.20. Annealing at 300°C caused UTS and YS to decrease significantly,
to 510 and 408 MPa, respectively, ductility to increase to 28%, and hardness to
decrease to 165 HV. Fractography analysis of un-annealed samples after four
ECAP passes showed small brittle fractures with shallow dimpling. Ductile
failures were found on annealed samples. After four ECAP passes, the
microstructure of un-annealed samples was UFG and dominated by lamellar grain
with shear band. In contrast, after annealing, the microstructure changed due
to recrystallization, showing nucleation and grain growth.

 Metadata

Jenis Koleksi : Artikel Jurnal
No. Panggil : J-Pdf
Entri utama-Nama orang :
Entri tambahan-Nama orang :
Subjek :
Penerbitan : [Place of publication not identified]: [Publisher not identified], 2017
Sumber Pengatalogan : LibUI eng rda
ISSN : 2087-2100
Majalah/Jurnal : International Journal of Technology (IJTECH)
Volume : Vol 8, No 1 2017 58-65
Tipe Konten : text
Tipe Media : computer
Tipe Carrier : online resource
Akses Elektronik : http://www.ijtech.eng.ui.ac.id/index.php/journal/article/view/2958
Institusi Pemilik : Universitas Indonesia
Lokasi :
  • Ketersediaan
  • Ulasan
  • Sampul
No. Panggil No. Barkod Ketersediaan
J-Pdf 03-17-355520186 TERSEDIA
Ulasan:
Tidak ada ulasan pada koleksi ini: 20449266
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