Abstract
In this paper, high intensity pulsed ion beam (HIPIB) of 85% Cn+ + 15% H+ was used to irradiate crystalline molybdenum. Before and after irradiation, the surface structure and mechanical properties were studied with different irradiation times and energy densities. After HIPIB irradiation, stress was generated inside the molybdenum. As the energy density increases, the thermal effect which was enhanced apparently causes a preferred orientation in the molybdenum. When the energy density reaches 1.6–2.5 J/cm2 with 3 pulses, craters and cracks appear on the surface of molybdenum. Besides, the α-Mo2C phase formed in the near-surficial region of molybdenum is beneficial to the hardness increasement. After HIPIB irradiation, the ratio of average hardness (Hirr/Hunirr) and Nix-Gao model show that the macro hardness of molybdenum decreases with the increase of pulse number and energy density. Compared with the effect of ion implantation on hardness improvement, the annealing effect of HIPIB thermal irradiation plays a more important role in the reduction of molybdenum hardness. The hardness of the molybdenum decreases under the combined action.
| Original language | English |
|---|---|
| Article number | 125333 |
| Journal | Surface and Coatings Technology |
| Volume | 384 |
| DOIs | |
| Publication status | Published - 25 Feb 2020 |
Fingerprint
Keywords
- Crystalline molybdenum
- High intensity pulsed ion beam (HIPIB)
- Mechanical properties
- Microstructure
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Effect on mechanics properties and microstructure of molybdenum by high intensity pulsed ion beam irradiation. / Zou, Hao; Zhang, Lisong; Guan, Tong; Zhang, Xiaonan; Remnev, Gennady E.; Pavlov, Sergey K.; Wang, Younian; Mei, Xianxiu.
In: Surface and Coatings Technology, Vol. 384, 125333, 25.02.2020.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect on mechanics properties and microstructure of molybdenum by high intensity pulsed ion beam irradiation
AU - Zou, Hao
AU - Zhang, Lisong
AU - Guan, Tong
AU - Zhang, Xiaonan
AU - Remnev, Gennady E.
AU - Pavlov, Sergey K.
AU - Wang, Younian
AU - Mei, Xianxiu
PY - 2020/2/25
Y1 - 2020/2/25
N2 - In this paper, high intensity pulsed ion beam (HIPIB) of 85% Cn+ + 15% H+ was used to irradiate crystalline molybdenum. Before and after irradiation, the surface structure and mechanical properties were studied with different irradiation times and energy densities. After HIPIB irradiation, stress was generated inside the molybdenum. As the energy density increases, the thermal effect which was enhanced apparently causes a preferred orientation in the molybdenum. When the energy density reaches 1.6–2.5 J/cm2 with 3 pulses, craters and cracks appear on the surface of molybdenum. Besides, the α-Mo2C phase formed in the near-surficial region of molybdenum is beneficial to the hardness increasement. After HIPIB irradiation, the ratio of average hardness (Hirr/Hunirr) and Nix-Gao model show that the macro hardness of molybdenum decreases with the increase of pulse number and energy density. Compared with the effect of ion implantation on hardness improvement, the annealing effect of HIPIB thermal irradiation plays a more important role in the reduction of molybdenum hardness. The hardness of the molybdenum decreases under the combined action.
AB - In this paper, high intensity pulsed ion beam (HIPIB) of 85% Cn+ + 15% H+ was used to irradiate crystalline molybdenum. Before and after irradiation, the surface structure and mechanical properties were studied with different irradiation times and energy densities. After HIPIB irradiation, stress was generated inside the molybdenum. As the energy density increases, the thermal effect which was enhanced apparently causes a preferred orientation in the molybdenum. When the energy density reaches 1.6–2.5 J/cm2 with 3 pulses, craters and cracks appear on the surface of molybdenum. Besides, the α-Mo2C phase formed in the near-surficial region of molybdenum is beneficial to the hardness increasement. After HIPIB irradiation, the ratio of average hardness (Hirr/Hunirr) and Nix-Gao model show that the macro hardness of molybdenum decreases with the increase of pulse number and energy density. Compared with the effect of ion implantation on hardness improvement, the annealing effect of HIPIB thermal irradiation plays a more important role in the reduction of molybdenum hardness. The hardness of the molybdenum decreases under the combined action.
KW - Crystalline molybdenum
KW - High intensity pulsed ion beam (HIPIB)
KW - Mechanical properties
KW - Microstructure
UR - http://www.scopus.com/inward/record.url?scp=85077400391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85077400391&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2020.125333
DO - 10.1016/j.surfcoat.2020.125333
M3 - Article
AN - SCOPUS:85077400391
VL - 384
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
M1 - 125333
ER -