TY - JOUR
T1 - Influence of Sintering Temperature on Microstructure and Mechanical Properties of Ti–Mo–B4C Composites
AU - Sabahi Namini, Abbas
AU - Shahedi Asl, Mehdi
AU - Delbari, Seyed Ali
N1 - Publisher Copyright:
© 2019, The Korean Institute of Metals and Materials.
PY - 2021/5
Y1 - 2021/5
N2 - Abstract: Ti–10 wt% Mo–1 wt% B4C composite samples were SPSed under the circumstances of 5 min dwell time, 50 MPa external pressure and sintering temperatures of 1150 °C, 1300 °C and 1450 °C. The role of sintering temperature on the relative density, microstructure and mechanical characteristics of as-sintered specimens were studied. Near fully dense relative density was obtained for the samples sintered at 1450 °C. The best mechanical properties including UTS, elongation, bending strength and micro/macro hardness were achieved for the composites SPSed at the highest temperature. The XRD results and also microscopic photographs disclosed the formation of TiB + TiC in-situ phases. However, there was not any evidence for chemical reaction between Mo and other phases. The role of produced in-situ phases on the grain growth also studied using SEM fractographs. Graphic Abstract: [Figure not available: see fulltext.]
AB - Abstract: Ti–10 wt% Mo–1 wt% B4C composite samples were SPSed under the circumstances of 5 min dwell time, 50 MPa external pressure and sintering temperatures of 1150 °C, 1300 °C and 1450 °C. The role of sintering temperature on the relative density, microstructure and mechanical characteristics of as-sintered specimens were studied. Near fully dense relative density was obtained for the samples sintered at 1450 °C. The best mechanical properties including UTS, elongation, bending strength and micro/macro hardness were achieved for the composites SPSed at the highest temperature. The XRD results and also microscopic photographs disclosed the formation of TiB + TiC in-situ phases. However, there was not any evidence for chemical reaction between Mo and other phases. The role of produced in-situ phases on the grain growth also studied using SEM fractographs. Graphic Abstract: [Figure not available: see fulltext.]
KW - BC
KW - Mo
KW - Spark plasma sintering
KW - Titanium matrix composite
UR - http://www.scopus.com/inward/record.url?scp=85073033602&partnerID=8YFLogxK
U2 - 10.1007/s12540-019-00469-y
DO - 10.1007/s12540-019-00469-y
M3 - Article
AN - SCOPUS:85073033602
SN - 1598-9623
VL - 27
SP - 1092
EP - 1102
JO - Metals and Materials International
JF - Metals and Materials International
IS - 5
ER -