| 马氏体－奥氏体组元形态对高强钢焊接热影响区韧性的影响 |
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| 引用本文： | 荆洪阳,霍立兴,张玉凤,丰田政男,南二三吉. 马氏体－奥氏体组元形态对高强钢焊接热影响区韧性的影响[J]. 机械工程学报, 1995, 0(6) |
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| 作者姓名： | 荆洪阳 霍立兴 张玉凤 丰田政男 南二三吉 |
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| 作者单位： | 天津大学，日本大阪大学 |
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| 摘 要： | 采用图象处理的方法，定量分析了高产强钢焊接热影响区粗晶区中马氏体－奥氏体组元（ＭＡ组元）的分布形态，并着重研究了ＭＡ组元的形态和粗晶区韧性的关系。结果表明：细长ＭＡ组元（纵横比≥４）含有率ＳＶｆ对热影响区韧性有很大影响。ＳＶｆ的微量增加，韧性急剧下降，但ＳＶｆ超过某一定值后，由于ＭＡ组元相互邻接，韧性劣化趋势得到缓和。
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| 关 键 词： | 焊接接头，热影响区，图象处理，马氏体－奥氏体组元形态，韧性 |
MORPHOLOGICAL EFFECT OF MARTENSITE-AUSTENITE CONSTITUENTS ON FRACTURE TOUGHNESS OF WELD HAZ |
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| Jing Hongyang, Huo Lixing, Zhang Yufeng. MORPHOLOGICAL EFFECT OF MARTENSITE-AUSTENITE CONSTITUENTS ON FRACTURE TOUGHNESS OF WELD HAZ[J]. Chinese Journal of Mechanical Engineering, 1995, 0(6) |
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| Authors: | Jing Hongyang Huo Lixing Zhang Yufeng |
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| Abstract: | The morphological effect of martensise-austenite(M-A) constituents in weld coarse grained heat affected zone(CGHAZ) on the toughness is studied qnantitatively with a binary image processor for high strength steel. The results show that the volume fraction of the slender M-A constituents SVf affected the toughness. The toughness was degraded remarkably with the increase of SVf value, but this harm of slender particles was eliminated as SVf value excceed a particular value because of the vicinity effect. |
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| Keywords: | Welded joint HAZ Image Procesor Morpkology of M-A constituent Toughness |
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