李倩,宋月鹏,高东升,李江涛,孙祥鸣,Kim Hyoungseop

• 1:山东农业大学机械与电子工程学院
• 2:山东省园艺机械与装备重点实验室
• 3:中国科学院理化技术研究所
• 4:浦项工科大学材料科学与工程学院

摘要(Abstract)：

利用CuO/Al体系超重力熔铸钨铜复合材料,采用ANSYS有限元软件,提出一种先微单元、再整体而后微单元的模拟方法,对其成型过程中的温度、应力场进行仿真模拟并进行显微组织观察分析,结果表明:超重力场熔铸可形成非平衡结晶条件,高温低黏度铜溶液超重力场作用下快速填充钨颗粒压块孔隙,形成极高冷却速度(>100000℃/s),产生较大的应力,压块内的钨颗粒表面升温速度较快,其瞬时等效应力值可达5 GPa,使得颗粒表面爆裂而钝化,烧结能力及质量得到提高,随着温度降低,钨铜两相应力值逐渐降低,温度测量及显微组织研究结果验证了仿真模拟结果的可靠性。

关键词(KeyWords)： 钨铜复合材料;超重力熔铸;仿真模拟;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51001111,51201173);; ITPA人才项目(2010GB106003);; 国家磁约束核聚变能发展研究专项(2013GB110005);; “十二五”国家科技支撑计划项目(2011BAD12B02);; 山东省研究生教育创新计划(SDYY11079)

作者(Author): 李倩,宋月鹏,高东升,李江涛,孙祥鸣,Kim Hyoungseop

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