Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Shengguo MA"'
Autor:
Huiqing Fang, Dan Zhao, Wenjun Wu, Guang Hu, Tao Jin, Ji Qiu, Jianjun Wang, Shengguo Ma, Tuanwei Zhang, Zhihua Wang
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 2815-2829 (2024)
Single-phase CrCoNi-based medium-entropy alloys (MEAs) have garnered considerable attention as a promising class of metallic materials. However, despite this growing interest, the dynamic mechanical response of CrCoNi-based MEAs at high strain rate r
Externí odkaz:
https://doaj.org/article/5e49d62a6e57462ab59f9d97ab7e88c6
Autor:
Shiyu Du, Tuanwei Zhang, Jinyao Ma, Zhiming Jiao, Jianjun Wang, Shengguo Ma, Renlong Xiong, Zhihua Wang
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 2856-2867 (2024)
A novel precipitate-strengthened Co–Cr–Ni medium-entropy alloy with a pure “FCC + L12” dual-phase structure is developed by adding a high concentration (6 at.%) of Al and Ti elements. After aging heat treatment at 700 °C for 4 h, the hierarc
Externí odkaz:
https://doaj.org/article/0bbf1afcdc1b4f2ca5e9a5c369555d80
Autor:
Jiaxin Zhang, Shengguo Ma, Xiaoxiao Liu, Junwei Qiao, Jianjun Wang, Dan Zhao, Zhiming Jiao, Tuanwei Zhang, Bin Xu, Zhihua Wang
Publikováno v:
Journal of Materials Research and Technology, Vol 31, Iss , Pp 3883-3890 (2024)
A Co-free non-equiatomic Ni2·5CrFeAl0·25Ti0.25 medium-entropy alloy (MEA) with an excellent strength-ductility synergy was fabricated, which shows a multiphase structure composed of face-centered cubic (FCC), L12 (ordered FCC), and Cr-rich body-cen
Externí odkaz:
https://doaj.org/article/559fe183fcbf480eba5e20d1b5a2097f
Publikováno v:
Journal of Materials Research and Technology, Vol 31, Iss , Pp 3642-3651 (2024)
Powder Plasma Arc Additive Manufacturing (PPA-AM) technique has tremendous potential for the practical application in medium-entropy alloys (MEAs). In this study, we investigated the effect of heat treatment on microstructural evolution, mechanical p
Externí odkaz:
https://doaj.org/article/0ca1470ac0034623aceec73ab9082500
Autor:
Hui Chang, Tuanwei Zhang, Zhiqiang Li, Jinyao Ma, Jianjun Wang, Dan Zhao, Shengguo Ma, Zhihua Wang
Publikováno v:
Materials & Design, Vol 244, Iss , Pp 113131- (2024)
The CrCoNiSi0.3 MEA exhibits excellent cryogenic mechanical properties upon both quasi-static and dynamic tension. Under quasi-static tension at cryogenic temperature, the engineering yield and ultimate tensile strengths (UTS) reach 980 MPa and 1800
Externí odkaz:
https://doaj.org/article/4207280d73c240f493380e5dd5caa4de
Autor:
Hui Zhi, Shengguo Ma, Zhenhua Wang, Tuanwei Zhang, Qiang Wang, Tao Wang, Zhihua Wang, Qingxue Huang
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 2326-2337 (2024)
Ultrathin foils are used in multiple fields, including aerospace, and precision instrument design. In this paper, CoCrNi medium-entropy alloy (MEA) ultrathin foils with terminal thicknesses of 77 μm were prepared by accumulative cold rolling at room
Externí odkaz:
https://doaj.org/article/9a643b15ad95476b88b118e8081ca337
Autor:
Hongxu Guo, Jianjun Wang, Xiangxiang Tu, Xizhang Chen, Shengguo Ma, Dan Zhao, Zhiming Jiao, Tuanwei Zhang, Ruifeng Wang, Zhihua Wang
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 3093-3109 (2024)
To enhance the strength and toughness of metallic materials simultaneously over a wide range of temperatures and strain rates, a eutectic high-entropy FCC/Laves composite with a heterogeneous initial microstructure was fabricated by powder plasma arc
Externí odkaz:
https://doaj.org/article/08d13edea07148a783616ae240744304
Autor:
Tuanwei Zhang, Tianxiang Bai, Renlong Xiong, Shunhui Luo, Hui Chang, Shiyu Du, Jinyao Ma, Zhiming Jiao, Shengguo Ma, Jianjun Wang, Zhihua Wang
Publikováno v:
Metals, Vol 14, Iss 7, p 749 (2024)
A novel Ni-Co-Cr-based medium-entropy superalloy with a high Si content (7.5 at%) strengthened by an L12 phase was developed. The pure L12 phase, characterized by an average size of 50 nm and a volume fraction of 46%, was precipitated within the FCC
Externí odkaz:
https://doaj.org/article/a4face1f1de74d03a871d682db637150
Publikováno v:
Taiyuan Ligong Daxue xuebao, Vol 54, Iss 3, Pp 562-569 (2023)
Nanoindentation of FeCoCrNiCu high entropy alloys (HEAs) was simulated by molecular dynamics (MD) simulation to investigate the mechanical properties of HEAs in terms of Young’s modulus, dislocation, and shear strain. And the effects of loading rat
Externí odkaz:
https://doaj.org/article/903cd8a8ed4b471798fcc797e65d80c2
Publikováno v:
Taiyuan Ligong Daxue xuebao, Vol 54, Iss 2, Pp 290-300 (2023)
The dynamic loading of CoCrNiSi0.3 medium-entropy alloys was performed by using Split Hopkinson Pressure Bar. The compression properties at different strain rates were investigated, and found to be sensitive to strain rates and have obvious strain ra
Externí odkaz:
https://doaj.org/article/c91a08a46a64411dbe0aec902feb178d