臺灣博碩士論文加值系統

本論文研究美國A992耐震鋼材與SN490系列日本耐震鋼材，硫含量對於其鋼板厚度方向之抗拉強度、延展性、衝擊韌性等機械性質及材料微觀及巨觀組織之影響。
實驗結果顯示，SN490系列鋼板之厚度方向不論是抗拉強度、延展性、衝擊韌性等機械性質，皆比A992系列強韌。在微觀分析方面，板厚較小者，晶粒結構較細緻。在破斷面分析方向，SN490系列由於硫含量等介在物較少，故破斷面型態常以韌性破壞出現，A992系列破斷面面積約60%以脆性或劈裂型態出現。

The effect of sulfur content on mechanical properties including tensile strength, ductility, impact toughness and microstructure for A992, SN490B and SN490C construction steels was studied.

As a result, SN490B and SN490C are strengthener than A992 for mechanical properties. All the thickness of steel plates decrease in impact toughness because of sulfide. In the fracture areas specimens, characteristic ductile fracture with large dimples is the dominant mode of fracture in SN490B and SN490C because of less sulfide, but cleavage and brittleness mode in A992.

中文摘要...........................................................................Ⅰ
英文摘要...........................................................................Ⅱ
致謝.........................................................................Ⅲ
目錄.........................................................................Ⅴ
表索引.......................................................................Ⅶ
圖索引.......................................................................Ⅷ
第一章、前言............................................................................1
第二章、文獻回顧............................................................................5
2.1 電爐之特性...........................................................5
2.2 熱機處理之特徵.......................................................6
2.3 軋延製品之品質性.....................................................7
2.4 結構用鋼之規範.......................................................8
2.5 潛伏銲及樑柱接頭處複合銲道對柱板材質之影響...........................9
第三章、實驗方法...........................................................................15
3.1 A992鋼板材質統計分析及測試對象決定..................................15
3.2 母材................................................................17
3.3 實驗流程............................................................17
3.4 分光儀試驗..........................................................18
3.5 母材壓延方向之機械性質試驗..........................................18
3.6 母材板厚方向之機械試驗..............................................19
3.7 顯微組織觀察........................................................19
第四章、結果與討論...........................................................31
4.1 硫含量在鋼板分布之情形...............................................31
4.2 顯微組織觀察.........................................................32
4.3 拉伸性質.............................................................33
4.4 衝擊韌性性質.........................................................35
4.5 SEM破斷面分析........................................................37
第五章、結論.................................................................61
第六章、未來研究方向.........................................................64
參考文獻...........................................................................65
附錄一.......................................................................68
附錄二.......................................................................83
附錄三.......................................................................85
附錄四.......................................................................96
作者簡介....................................................................112

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