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Microstructural Features and Mechanical Properties Induced by the Spray Forming and Cold Rolling of the Cu-13.5 wt pct Sn Alloy 被引量:2
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作者 Xiaofeng WANG Jiuzhou ZHAO Jie HE Jiangtao WANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2008年第5期803-808,共6页
Copper alloys with high strength and high conductivity are an important functional material with full of potential applications. In the present investigation, a bronze with higher tin content (Cu-13.5 wt pct Sn) was... Copper alloys with high strength and high conductivity are an important functional material with full of potential applications. In the present investigation, a bronze with higher tin content (Cu-13.5 wt pct Sn) was prepared successfully by spray forming, the feasibility of cold roiling this alloy was investigated, and the cold roiling characteristics of this alloy have also been discussed. The results indicate that the spray-formed Cu-13.5 wt pct Sn alloy, compared with the as-cast ingot, shows a quite fine and homogeneous single-phase structure, and, therefore shows an excellent workability. It can be cold-roiled with nearly 15% reduction in the thickness per pass and the total reduction can reach 80%. The classical border between the wrought and cast alloys is shifted to considerably higher tin contents by spray forming. After proper thermo-mechanical treatment, spray-formed Cu-13.5 wt pct Sn alloy exhibits excellent comprehensive mechanical properties. Particularly, it shows a low elastic modulus (-88 GPa) and a high flow stress (over 800 MPa) after cold forming. This combination of properties is unique in the domain of metallic materials and could open new possibilities in spring technology field. 展开更多
关键词 Spray forming Cu-Sn alloys cold roiling Microstructure Mechanical properties
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Online Shape Dynamic Wrapping Angle Compensation Model of Cold Strip 被引量:11
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作者 YANG Li-po YU Bing-qiang YU Hua-xin 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2011年第7期28-32,共5页
In specific condition, when wrapping angle of cold rolling strip covering surface of shape detecting roll dynamically changes, online radial compression of the shape detecting roll is changed too, and it seriously aff... In specific condition, when wrapping angle of cold rolling strip covering surface of shape detecting roll dynamically changes, online radial compression of the shape detecting roll is changed too, and it seriously affects online shape detecting precision of cold strip. Based on the latest intelligent shape meter developed by Yanshan University, using PSO-BP neural network and actual working condition datum, the cold strip online dynamic wrapping angle compensation model is established, and successfully applied in 1250 mm 6-high cold mill, remarkable results are achieved. The error between calculated values and measured values of total tensions is within 3 % 展开更多
关键词 cold roiling strip shape detecting wrapping angle COMPENSATION shape meter cold mill
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Fatigue Property of Hot Rolled and Cold Rolled Strips 被引量:1
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作者 LI Sheng-li LI Na +2 位作者 PENG Xing-dong LU Xiang-yu LI Ji-guang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2013年第2期48-51,共4页
Tension-tension fatigue properties of hot rolled and cold rolled strips with same contents and sizes were measured by using group test method at room temperature in air. The results showed that the fatigue properties ... Tension-tension fatigue properties of hot rolled and cold rolled strips with same contents and sizes were measured by using group test method at room temperature in air. The results showed that the fatigue properties of the hot rolled strips were obviously higher than those of the cold rolled strips. The hot rolled strips with similar or higher tensile strength exhibited superior fatigue property over the cold rolled strips. Fracture morphologies observed using scanning electronic microscope (SEM) showed that the hot rolled strips exhibited larger fracture areas, indicating a slightly lower plasticity, and more even fracture microstructure and stable properties. It is feasible and reliable to replace cold rolled strips with hot rolled strips. 展开更多
关键词 hot rolled strip cold roiled strip fatigue property replacement of cold rolled strip
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