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題 名 | Sus410 麻田散鐵系不銹鋼硬面銲補工作耐熱疲勞特性之研究 |
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作 者 | 郭央諶; | 書刊名 | 材料科學 |
卷 期 | 24:4 1992.12[民81.12] |
頁 次 | 頁263-277 |
分類號 | 472.14 |
關鍵詞 | 不銹鋼; 耐熱; 疲勞; 麻田散鐵系; 硬面; 銲補; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究乃是採用兩種不同成分的410不�袗�銲帶,以潛弧銲法實施堆積 銲(Bead on Plate)以探討其化學成分及銲後熱處理溫度對硬面銲補層耐熱疲勞特 性之影響。 實驗中對兩種銲材施以625℃、650℃、675℃之銲後回火處理後,分別進行耐熱 疲勞實驗,並對直銲下、回火下、回火後經過熱疲勞後等試片量測硬度,觀察其 光學、SEM、TEM等顯微組織,升析其碳化物結構,以瞭解材料成份及銲後熱處 理溫度與顯微組織、耐熱疲勞性之關係。 由微硬度量測分析得知,隨著回火溫度提高,銲道硬度降低,銲件的耐熱疲勞使 用性增加。碳化物析出量隨回火溫度提高而增加,410麻田散鐵不�袗�之碳化物 為面心立方結構的(Fe,Cr)�荃蚓�葦活A添加M0元素後,其碳化物為複雜面心結構 的(Fe,Cr,Mo)�荃蚓�葦活A其析出溫度較低,成顆粒狀,量多且細。添加Ni使材料 回火軟化效應較明顯,且碳化物沿晶界成長條狀析出,造成晶界弱化,對耐熱疲 勞性有不利之影響。 |
英文摘要 | The SUS 410 martensitic stainless steel strip, which has two different compositions, were deposited by Submerged-Arc welding process, the effects of chemical compositions and post-heat-treating temperature on thermal fatigue resistance of the hard-facing weidments were evaluated. In this study, specimens were annealed at 625℃, 650℃, 675℃ after welding and then thermal fatigue test was carried out. their microstructure were examined by OM, SEM, TEM. The experimental results show that chemical compositions and post-heat-treating temperature will affect the microstructures and thermal fatigue resistance. The important conclusions are as follows:1. The hardness of weld pools decreased and the amount of precipitation of carbides increased with increasing post-heat-treating temperature.2. The fatigue resistance appeared to increase with increasing post-heat-treating temperature.3. The carbide in 410 martensitic stainless steel is FCC (Fe,Cr)�荃蚓�� structure. By adding Mo, the carbide was found to be FCC (Fe,Cr,Mo)�荃蚓�� structure.4. By adding Mo, the mateiral strength appeared to increase at high temperature, and the prepcipitation of Mo carbide is more abundant and fine which results in higher fatigue resistance.5. By adding Ni, the tendency of temper-softening will be promoted; and carbides are developed along the grain boundaries in the form of long needle-like laths, which are unfavorable to the fatigue resistance of the hard-facing weidments. |
本系統中英文摘要資訊取自各篇刊載內容。