| 低碳合金结构钢JR阻力曲线特性 |
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| 引用本文： | 陈黄浦,邓增杰.低碳合金结构钢JR阻力曲线特性[J].矿冶工程,1994,14(2):67-70. |
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| 作者姓名： | 陈黄浦 邓增杰 |
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| 作者单位： | 西安交通大学 |
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| 摘 要： | 研究了低碳合金结构钢裂纹早期扩展阻力，结果表明：具有不同强度和塑性的材料，即使在断裂韧性测试中可以得到大致相同的启裂值，但由于裂纹尖端塑性约束程度不同，启裂过程中消耗的能量不同，在随后的裂纹扩展过程中抵抗裂纹稳态扩展的阻力相差很大。
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| 关 键 词： | 启裂，裂纹早期扩展阻力，形变功 |
THE CHARACTERISTICS OF J_T RESISTANCE CURVE FOR LOW-CARBON ALLOY STRUCTURE STEELS |
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| Chen Huangpu, Deng Zeng jie.THE CHARACTERISTICS OF J_T RESISTANCE CURVE FOR LOW-CARBON ALLOY STRUCTURE STEELS[J].Mining and Metallurgical Engineering,1994,14(2):67-70. |
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| Authors: | Chen Huangpu Deng Zeng jie |
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| Affiliation: | Xian Jiaotong University |
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| Abstract: | The resistance to crack propagation at the earlier stage has been investigatedfor some low-carbon alloy steels with different microstructures and toughness.The resultsshowed that the materials may have the same values of crack initiation in spite of their differ-ent toughness and microstructure,but the variance in the energy absorbed for crack initiationdue to variable plastic restraints of the crack tips will lead to significant distinction in the re-sistance to steady-state propagation of cracks. |
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| Keywords: | Crack initiation Crack propagation resistance Deformation work |
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