| C—Si—Mn—B贝氏体钢的疲劳裂纹扩展特性 |
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| 引用本文： | 黄维刚,方鸿生,郑燕康. C—Si—Mn—B贝氏体钢的疲劳裂纹扩展特性[J]. 金属学报, 2001, 37(9): 927-931 |
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| 作者姓名： | 黄维刚 方鸿生 郑燕康 |
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| 作者单位： | 1. 重庆大学材料科学与工程学院,重庆,400044
2. 清华大学材料科学与工程系,北京,100084 |
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| 摘 要： | 本文研究了C－Si-Mn-B贝氏体钢的疲劳裂纹扩展特性。结果表明，在强度相近的情况下，含1．8％Si钢的门槛值△Kth较0．6％Si钢的低，而且钢中的残余奥氏体对提高△Kth值并非有利。1．8％Si钢的△Kth值随钢的屈服强度降低而提高，然而450℃回火后，虽然△Kt提高，但裂纹扩展速率也显著提高，这表明450℃回火贝氏体脆性促进了疲劳裂纹的扩展。在应力强度因子较高的范围内，疲劳裂纹扩展速率受钢的断裂韧性影响，断裂韧性高，裂纹扩展速率低。
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| 关 键 词： | 贝氏体钢 门槛值 疲劳 裂纹扩展速率 断裂韧性 |
| 文章编号： | 0412-1961(2001)09-0027-05 |
| 修稿时间： | 2000-09-19 |
CHARACTER OF THE FATIGUE CRACK PROPAGATION IN C-Si-Mn-B BAINITIC STEEL |
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| HUANG Weigang College of Materials Science and Engineering,Chongqing University,Chongqing FANG Hongsheng,ZHENG Yankang Depatment of Materials and Engineering,Tsinghua University,Beijing Correspondent: HUANG Weigang,associate professor. CHARACTER OF THE FATIGUE CRACK PROPAGATION IN C-Si-Mn-B BAINITIC STEEL[J]. Acta Metallurgica Sinica, 2001, 37(9): 927-931 |
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| Authors: | HUANG Weigang College of Materials Science Engineering Chongqing University Chongqing FANG Hongsheng ZHENG Yankang Depatment of Materials Engineering Tsinghua University Beijing Correspondent: HUANG Weigang associate professor |
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| Affiliation: | HUANG Weigang College of Materials Science and Engineering,Chongqing University,Chongqing 400044 FANG Hongsheng,ZHENG Yankang Depatment of Materials and Engineering,Tsinghua University,Beijing 100084 Correspondent: HUANG Weigang,associate professor |
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| Abstract: | |
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| Keywords: | bainitic steel threshold value fatigue crack propagation rate fracture toughness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
