| 电子束悬浮熔炼钼铼合金铸锭的热加工方法 |
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| 引用本文： | 张军良,李中奎,付洁,夏明星,殷涛,刘辉.电子束悬浮熔炼钼铼合金铸锭的热加工方法[J].中国钼业,2010,34(5):38-40. |
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| 作者姓名： | 张军良 李中奎 付洁 夏明星 殷涛 刘辉 |
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| 作者单位： | [1]西北有色金属研究院新材料研究所,陕西西安710016 [2]西安建筑科技大学,陕西西安710055 |
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| 摘 要： | 电子束悬浮熔炼钼铼合金铸锭晶粒粗大,致使热加工性能变差,锻造过程出现开裂,文章分析了锻造过程材料的受力状态,认为是垂直晶界的拉应力导致沿晶开裂,据此提出了热轧开坯的工艺方法,且规定第1道次平行铸锭轴向喂料,轧制过程中材料产生剪切滑移变形,滑移面与晶界成一定夹角,不产生垂直晶界的拉应力,避免了拉应力作用下的沿晶开裂,获得优质热轧板。
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| 关 键 词： | 钼铼合金 粗晶 锻造 拉应力 沿晶开裂 轧制 剪切滑移 应力方向 |
ELECTRON BEAM LEVITATION MELTING MOLYBDENUM RHENIUM ALLOY INGOTS THERMAL PROCESSING METHODS |
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| ZHANG Jun-liang,LI Zhong-kui,FU Jie,XIA Ming-xing,YIN Tao,LIU Hui.ELECTRON BEAM LEVITATION MELTING MOLYBDENUM RHENIUM ALLOY INGOTS THERMAL PROCESSING METHODS[J].China Molybdenum Industry,2010,34(5):38-40. |
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| Authors: | ZHANG Jun-liang LI Zhong-kui FU Jie XIA Ming-xing YIN Tao LIU Hui |
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| Affiliation: | 1.Northwest Institute For Non-ferrous Metal Research,Xi＇an 710016,Shaanxi,China)(2.Xi＇an University of Science and Technology,Xi＇an 710055,Shaanxi,China) |
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| Abstract: | Hot workability of the molybdenum rhenium alloy ingots fabricated by electron beam suspension melting deteriorates and cracks during forging because of its coarse grains.The stress state in the process of forging was analyzed,and it is suggested that tension stress perpendicular to the grain boundary leads to intergranular cracking.The hot-rolled breakdown process is presented,and it is suggested that feed direction should be along ingot axis at the first pass.Shear slip deformation is produced during rolling,and a certain angle should be formed between grain boundaries and sliding surface,so that tension stress is inclined to grain boundaries,avoiding intergranular cracks and obtaining high-quality hot-rolled plates. |
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| Keywords: | molybdenum rhenium alloys coarse grain forging tensile stress intergranular cracking rolling shear slip stress direction |
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