Acta Physica Sinica, Volume. 68, Issue 24, 246102-1(2019)
Fig. 1. Model of single crystal iron under triaxial tension (atoms are colored by CNA).单晶铁三轴拉伸模型
Fig. 2. Tensile stress as a function of time at 100–1100 K.100—1100 K温度下拉应力随时间的变化
Fig. 4. Void volume fraction as a function of time at 100– 1100 K.100—1100 K温度下孔洞体积分数随时间的变化
Fig. 6. Distribution of voids at 100–1100 K (void volume fraction is 0.1).100—1100 K温度下内部孔洞分布(孔洞体积分数为0.1时)
Fig. 7. Void volume fraction as a function of time at 100−700 K: (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K.100−1100 K温度下孔洞体积分数与拉应力的关系 (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K
Fig. 8. Void distribution on the second-peak of tensile stress at 100−700 K.100−700 K温度下拉应力时程曲线第二峰值点孔洞分布
Fig. 9. Evolution of dislocation density as a function of time at 100−1100 K: (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K.100−1100 K温度下位错密度变化情况 (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K
Fig. 10. Radial distribution function of the system at 100−1100 K: (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K.100−1100 K温度下径向分布函数变化情况 (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K
Fig. 11. Snapshots for the structural changes at 100−1100 K: (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K.100−1100 K温度下内部结构变化 (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K
Fig. 12. Crystal structure fraction as a function of time at 100−1100 K: (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K.100−1100 K温度下内部晶体结构占比 (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K
Fig. 13. Structural changes at different time at 300 K.300 K温度下系统内部结构变化
Fig. 15. Potential energy of the system at 100−1100 K.100−1100 K温度下系统势能
Fig. 16. Comparison of void volume fraction between the NAG model and MD at 100−1100 K: (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K.100−1100 K温度下NAG与MD的孔洞体积分数结果的对比 (a) 100 K; (b) 300 K; (c) 500 K; (d) 700 K; (e) 900 K; (f) 1100 K
Table 1.
Four characteristic points time at 100– 700 K.
100—700 K温度下四个特征点时间
View tableView in ArticleTable 1.
Four characteristic points time at 100– 700 K.
100—700 K温度下四个特征点时间
温度/K 时间/ps A B C D 100 15.7 16.5 17.5 19.1 300 13.4 14.5 15.4 17.9 500 12.6 13.8 14.9 17.7 700 13.1 13.9 14.6 17.6
Table 2.
Best-fit NAG parameters at 100−1100 K.
100−1100 K温度下NAG模型最佳拟合参数
View tableView in ArticleTable 2.
Best-fit NAG parameters at 100−1100 K.
100−1100 K温度下NAG模型最佳拟合参数
Pn0/Pa P1/Pa ${\dot N_0}$ Pg0/Pa η/Pa·s Rn/m Σ 100 K 1.61 × 1010 1.42 × 107 7.10 × 1015 2.75 × 109 1.72 × 10–1 3.1 × 10–10 0.15 300 K 1.55 × 1010 2.35 × 107 1.22 × 1015 2.48 × 109 2.20 × 10–1 3.1 × 10–10 0.18 500 K 1.51 × 1010 1.18 × 107 5.91 × 1014 2.15 × 109 1.83 × 10–1 3.1 × 10–10 0.14 700 K 1.50 × 1010 3.31 × 107 1.37 × 1016 2.02 × 109 2.17 × 10–1 3.1 × 10–10 0.17 900 K 1.46 × 1010 2.76 × 107 3.29 × 1015 1.98 × 109 2.53 × 10–1 3.1 × 10–10 0.12 1100 K 1.33 × 1010 1.87 × 107 1.88 × 1014 1.95 × 109 2.11 × 10–1 3.1 × 10–10 0.17 低碳钢[ 54 ]1.12 × 109 1.0 × 108 2.5 × 1014 2.0 × 108 2.778 × 102 3.0 × 10–5
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Yun-Tian Wang, Xiang-Guo Zeng, Xin Yang.
Received: Jun. 14, 2019
Accepted: --
Published Online: Sep. 17, 2020
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