Effect of consolidation parameters on mechanical properties of Cu-based bulk amorphous alloy consolidated by hot pressing  

固结参数对热压成型铜基块体非晶合金力学性能的影响(英文)

作　　者：蔡安辉[1] 熊翔[2] 刘咏[2] 安伟科[1] 周果君[1] 罗云[1] 李铁林[1] 李小松[1] 

机构地区：[1]湖南理工学院机械工程学院,岳阳414006 [2]中南大学粉末冶金国家重点实验室,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2012年第8期2032-2040,共9页中国有色金属学报（英文版）

基　　金：Project (50874045) supported by the National Natural Science Foundation of China;Projects (200902472, 20080431021) supported by the China Postdoctoral Science Foundation;Project (10A044) supported by the Research Foundation of Education Bureau of Hunan Province of China

摘　　要：Cu50Zr40Ti10 bulk amorphous alloys were fabricated by hot pressing gas-atomized Cu50Zr40Ti10 amorphous powder under different consolidation conditions without vacuum and inert gas protection. The consolidation conditions of the Cu50Zr40Ti10 amorphous powder were investigated based on an L9（34） orthogonal design. The compression strength and strain limit of the Cu50Zr40Ti10 bulk amorphous alloys can reach up to 1090.4 MPa and 11.9 %, respectively. The consolidation pressure significantly influences the strain limit and compression strength of the compact. But the mechanical properties are not significantly influenced by the consolidation temperature. In addition, the preforming pressure significantly influences not the compression strength but the strain limit. The optimum consolidation condition for the Cu50Zr40Ti10 amorphous powder is first precompacted under the pressure of 150 MPa, and then consolidated under the pressure of 450 MPa and the temperature of 380 °C.采用雾化法制备Cu50Zr40Ti10非晶合金粉末,在大气环境下将其热压成型为块体非晶合金,并基于L9(34)正交实验对热压成型条件进行优化。固结成型的Cu50Zr40Ti10块体非晶合金的抗压强度和应变极限值分别达到1090.4MPa和11.9%。固结压力显著影响块体非晶合金的应变极限和抗压强度,但是固结温度的影响不显著。初始成形力对块体非晶合金的抗压强度的影响不显著而对应变极限的影响很显著。Cu50Zr40Ti10非晶合金粉末的最优热压成型工艺条件为:首先在150MPa压力下进行预成型,然后在380°C和450MPa条件下进行热压。

关 键 词：hot pressing Cu-based amorphous alloy strain limit CONSOLIDATION mechanical property 

分 类 号：TG139.8[一般工业技术—材料科学与工程]