Practicability of Liquid Phase Diffusion Welding by use of Amorphous Interlayers

首先，镍基干扰物对超合金Inconel 713 C过渡液体相位扩散的形态学和组成的影响，已被显微镜、电子探测器微分析和连接的高温强度测试的调查。中间层的正确组成调整、粉末精炼和同源化对两者都有重要影响。特别是在非典型的中间层是由快速串联的液体金属方法制成的，其组成的同源性是如何使连接件容易的同源性得到公平地改进而没有分离的分子溴化和哈芬。另外，在使用非典型接口的情况下，在连接接口上形成液体层的厚度被揭示为变得瘦与使用动力接口的情况下进行比较，因此，液体相位的同质化可以更快地使用。这些现象是被证明的 ... More 为了提高联合强度的结果，以及一些jions在压力-rupture测试中显示出100%的jions的效率。第二，商业纯钛和Ti-6A 1 -4V的液体相位扩散的可扩展性和脆弱性已被调查，电子探针在两个房间和高温下进行了微观分析和张力测试，以防止从精细金属结构中改变。钛和Ti-6A 1 -4V接头在5分钟内产生了<beta>转化和<beta>晶体温度，由最近开发的带有低熔点的非晶界面使用，以满足钛、Zr、Cu和镍接头的钛和Ti-6A 1 -4V接头在850 ° C上5分钟内产生，900 ° C在10分钟内产生，在没有基础金属结构的情况下，基本金属是失败的。本说明在钛和钛合金的情况下，可以与基础金属进行足够的连接，可以用新的Ti-Zr-Cu-Ni仿形填充金属制成液体相位扩散。Less（低）

Firstly, effects of the morphology and composition of nickel-base interlayers on transient liquid phase diffusion weldability of superalloy Inconel 713C have been investigated by microscopy, electron probe microanalysis and high temperature strength tests of the joints.Proper composition adjustment, powder refinement and homogenization of the interlayers were indicated to be both important for the improvement of the weldability. Especially in amorphous interlayers made by the rapid quenching liquid metal method, the composition homogeneity which contributes to easy homogenization of the joints was fairly improved without segregation of molybdenum and hafnium. Additionally, in case of using amorphous interlayers, the thickness of liquid layer formed at the joint interface during welding was revealed to become thinner compared with the case of using powdered interlayers, so that the isothermal solidification of the liquid phase could occur more rapidly. These phenomena were demonstrated … More to result in increasing the joint strength, and some of the jionts showed 100 percent jiont efficiency in stress-rupture tests.Secondly, the Liquid-phase diffusion weldability and brazability of commercial pure titanium and Ti-6A1-4V alloy has been investigated by microscopy, electron probe microanalysis and tensile tests at both room and high temperatures.In order to prevent from changing the fine base metal structures, the titanium and Ti-6A1-4V joints were made below <beta> transformation and <beta> transus temperatures respectively, by use of newly developed amorphous interlayers with low melting points, consisting of Ti, Zr, Cu and Ni.Both joints of titanium and Ti-6A1-4V made at 850゜C for 5 minutes and at 900゜C for 10 minutes respectively, were failed in base metal without changing of the base metal structures. This shows that in case of titanium and titanium alloys, enough joints to be comparable with base metals can be made by liquid phase diffusion welding with new Ti-Zr-Cu-Ni amorphous filler metals. Less