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題名 | 硬眼組織縮墨鑄鐵尿素軟氮化後的機械性質 |
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作者 | 陳克昌; 洪敏雄; | 書刊名 | 逢甲學報 |
卷期 | 27 1994.11[民83.11] |
頁次 | 頁455-467 |
分類號 | 440.363 |
關鍵詞 | 尿素; 軟氮化; 硬眼組織; 機械性質; 縮墨鑄鐵; |
語文 | 中文(Chinese) |
中文摘要 | 本文是研究麻田散鐵及變�空K硬眼組織縮墨鑄鐵經尿素軟氮化處理後的機械性質 。與牛眼組織縮墨鑄鐵尿素軟氮化後的性質相比較,上述二種硬眼組織的衝擊值和伸長率較 高,而疲勞強度,抗拉強度和耐磨耗性較低,不過仍能獲得疲勞強度,抗拉強度和耐磨耗性 分別與衝擊值和伸長率的較佳配合。兩種硬眼處理相較,變韌鐵硬眼組織的疲勞強度、衝擊 值和伸長率較高,而且強度和韌性的配合亦較佳。縮墨鑄鐵亦如球墨鑄鐵可因硬眼處理而減 緩尿素軟氮化所引起的脆化現象,但其韌性和延性的增幅較小。 |
英文摘要 | The mechanical properties of urea soft-nitrided compacted cast iron with martensitic and bainitic hard eye structure have been studied. If the hard eye structure was introduced before urea soft-nitriding, it has lower fatigue strength, tensile strength, and wear resistance, but higher impact value and elongation, compared with the bull eye structure. However, the hard eye structure has superior mechanical properties if the combinations of each of the former three measured values with those of the latter two are considered. The urea soft-nitrided compacted cast iron with a bainitic hard eye structure has been found to have higher fatigue strength, elongation and impact value and also has better combinations of impact value or elongation with wear resistance or tensile strength than the same cast iron with martensitic hard eye structure. And the effect of the hard eye structure to lower the toughness decrement of cast iron by urea soft-nitriding is smaller for compacted cast iron than for the nodular cast iron. |
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