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(Cu_(50)Zr_(50))_(92)Al_8非晶合金在过冷液相区的超塑扩散连接 被引量：2

Superplastic and Diffusion Bonding Behavior of the (Cu_(50)Zr_(50))_(92)Al_8 Metallic Glass in Supercooled Liquid Region
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摘要 （CusoZr50）92Al8非晶合金在过冷液相区表现出优异的超塑性，并且成功的进行了超塑扩散连接（SPF／DB）。根据DSC曲线确定了非晶合金的过冷液相区范围为68℃，并且根据非晶合金在过冷液相区的压缩真实应力．应变曲线，选取了超塑扩散连接实验的连接压力为200MPa，连接温度为470～490℃。XRD图谱显示经过超塑扩散连接后的非晶合金发生了部分晶化，显微硬度提高。将经过超塑扩散连接的样品置于万能拉升机上进行三点弯曲实验至发生断裂，通过对断口形貌的观察分析和界面处的力学分析考察了连接质量。在保持连接压力200MPa不变的情况下，非晶合金获得最好连接效果的工艺参数是：连接温度480℃，连接时间3h。 （CusoZrs0）92A18 metallic glass exhibited excellent superplasticity and diffusion bonding was succeeded in in the supercooled liquid region. The range of super-cooled liquid region is determined as 68℃ according to DSC curves. Through true stress-strain curves the experiment parameters of superplastic and diffusion bonding （SPF/DB） are chosen as bonding pressure of 200 MPa and bonding temperature of 470-490 ℃. XRD patterns show that the metallic glasses after SPF/DB are partially crystallized and the hardness is enhanced. Three-point bending tests were conducted on samples after SPF/DB to fracture using a universal testing machine, and the bonding quality was discussed through the fracture surface analysis. Keeping the pressure a constant of 200 MPa, the metallic glasses after superplastic and diffusion bonding is best bonded when the temperature is 480 ℃ and the bonding time is 3 h.
作者 吴为 林建国 魏萌 张德闯
机构地区 湘潭大学
出处 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2013年第7期1439-1444,共6页 Rare Metal Materials and Engineering
基金 国家自然科学基金(10972190) 湖南省教育厅重点项目(09A089)
关键词 大块非晶 (Cu50Zr50)92Al8 超塑扩散连接 三点弯曲 bulk metallic glass （CusoZrso）92Al5 superplastic and diffusion bonding 3-point bending
分类号 TG139.8 [一般工业技术—材料科学与工程]
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参考文献22

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共引文献7

同被引文献32

  • 1张程煜,姚可夫.Cu_(64)Zr_(36)非晶合金的晶化动力学[J].稀有金属材料与工程,2006,35(1):158-160. 被引量：6
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稀有金属材料与工程
2013年 第7期

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