| 落锤试验试样厚度尺寸效应对T_(NDT)的影响 |
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| 引用本文： | 马建坡,方亮,吉嘉龙. 落锤试验试样厚度尺寸效应对T_(NDT)的影响[J]. 材料开发与应用, 2004, 19(1): 5-8,17 |
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| 作者姓名： | 马建坡 方亮 吉嘉龙 |
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| 作者单位： | 1. 西安交通大学,陕西,西安,710049
2. 洛阳船舶材料研究所,河南,洛阳,471039 |
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| 摘 要： | 以3种供应状态、5种钢材、6型试样的落锤试验数据说明钢材的无塑性转变温度TNDT不仅与材料有关,而且与试样厚度有关,二者的关系可用函数式TNDT=At-m+B表示,式中的A、B、m是与材料有关的参数。为准确客观地反映实际工程材料的断裂特性,保证断裂设计的安全可靠,推荐采用厚度为12～50mm的6型落锤试样(P1～P6)和相应的试验条件。
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| 关 键 词： | 落锤试验 断裂性能 无塑性转变温度 |
| 文章编号： | 1003-1545(2004)01-0005-04 |
Influence of Thickness on TNDT of Drop-weight Specimen |
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| MA Jian-po,FANG Liang,JI Jia-long. Influence of Thickness on TNDT of Drop-weight Specimen[J]. Development and Application of Materials, 2004, 19(1): 5-8,17 |
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| Authors: | MA Jian-po FANG Liang JI Jia-long |
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| Affiliation: | MA Jian-po~1,FANG Liang~1,JI Jia-long~2 |
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| Abstract: | Based on the data of Drop-weight test of various kinds of specimens with different thickness, it could be concluded that the value of T_(NDT) is not only dependent on the materials but also the thickness of the specimen. The relationship between T_(NDT) and thickness could be described by a function of : T_(NDT)=(At)~(-m)+B, where A、B、m are coefficients related with the materials. Therefore, the six type of specimens (P1～P6) with thickness 12～50mm and their test conditions are recommended in engineering design in which the failure characteristic of materials should be properly described for the reliability of the design. |
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| Keywords: | Drop-weight test Fracture NDTT |
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