TY - JOUR
T1 - A strategy to achieve high-strength WNiFe composite-like alloys with low W content by laser melting deposition
AU - Zhou, Shangcheng
AU - Wang, Lu
AU - Liang, Yao Jian
AU - Zhu, Yichao
AU - Jian, Ruizhi
AU - Wang, Benpeng
AU - Wang, Liang
AU - Xue, Yunfei
AU - Wang, Fuchi
AU - Cai, Hongnian
AU - Ren, Yang
N1 - Publisher Copyright:
© 2020
PY - 2020/5
Y1 - 2020/5
N2 - Preparing bulk WNiFe alloys with high strengths and low W content (<80 wt%) is challenging. Here, we present a strategy, powder-fed laser melting deposition (LMD), to solve this problem. The LMD-prepared WNiFe (LMD WNiFe) samples show high mechanical strengths and low W contents of 50 and 75 wt%. The W particles in the LMD WNiFe samples uniformly distribute in the matrix (γ), exhibiting fine particle sizes of approximately one-fifth of those of conventional 93WNiFe alloys prepared by liquid phase sintering (LPS). The ultimate tensile strengths of the 50 and 75 wt% samples are 1120 and 1316 MPa, respectively, which are 24.44 and 59.33% higher than those of the LPS-prepared 93WNiFe alloy (LPS 93WNiFe). These results suggest a useful strategy for preparing low-W-content, high-strength WNiFe alloys with fine, uniformly distributed W particles. This finding offers new potential applications of WNiFe alloys in additive manufacturing.
AB - Preparing bulk WNiFe alloys with high strengths and low W content (<80 wt%) is challenging. Here, we present a strategy, powder-fed laser melting deposition (LMD), to solve this problem. The LMD-prepared WNiFe (LMD WNiFe) samples show high mechanical strengths and low W contents of 50 and 75 wt%. The W particles in the LMD WNiFe samples uniformly distribute in the matrix (γ), exhibiting fine particle sizes of approximately one-fifth of those of conventional 93WNiFe alloys prepared by liquid phase sintering (LPS). The ultimate tensile strengths of the 50 and 75 wt% samples are 1120 and 1316 MPa, respectively, which are 24.44 and 59.33% higher than those of the LPS-prepared 93WNiFe alloy (LPS 93WNiFe). These results suggest a useful strategy for preparing low-W-content, high-strength WNiFe alloys with fine, uniformly distributed W particles. This finding offers new potential applications of WNiFe alloys in additive manufacturing.
KW - Laser melting deposition
KW - Tungsten heavy alloy
KW - WNiFe alloy
UR - http://www.scopus.com/inward/record.url?scp=85079088662&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2020.108554
DO - 10.1016/j.matdes.2020.108554
M3 - Article
AN - SCOPUS:85079088662
SN - 0264-1275
VL - 190
JO - Materials and Design
JF - Materials and Design
M1 - 108554
ER -