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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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加载速率对20g钢高温断裂韧性的影响
, PP. 720-722
Keywords: 断裂韧性,加载速率,高温
Abstract:
对20g钢高温断裂韧性随加载速率的变化规律进行了实验研究.在400℃和500℃下,分别测量了几种加载速率下20g钢的Ji值.实验结果表明Ji值随应变速率的增大而有较大幅度的降低;在同一应变速率下,400℃时的Ji值小于500℃时的Ji值;400℃时裂纹扩展比500℃时更快.因此,当温度在400℃附近时更应注意避免超载.
| [1] | Hellen T K. Eng Mater Strict, 1991; 14: 627
|
| [2] | ASTM Standard E 813-89, ASTM 1989, 03.01, 968-990
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| [3] | ASTM Standard E 399-93, ASTM, 1993, 03.01, 1031-1043
|
| [4] | ASTM Standard E 813-C81, ASTM, 1981, 03.01, 768-786|
|
| [5] | Nikbin K M, Webster G A, Turner C E. Relevance of Non-linear Fracture Mechanics to Creep cracking, ASTM STP601, ASTM 1976, 47-59
|
| [6] | Landes J D, Begley J A. A Fracture Mechanics Approachto Creep Crack Growth, ASTM STP 590, 1976, 128-148
|
| [7] | Webster G A. J Strain Analysis, 1994; 29: 215
|
| [8] | Riedel H. J Mech Phys Solids, 1981; 29: 35
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