Hi..G.,  In my opinion, perhaps your Ti6Al4V alloy-sample  consisted of some phases ( phase transformation which is caused by sintering temperature). Since we know that steps of preparation such as raw materials (purity, ratio, grain size, others), homogeneous condition, mixing process, calcination and sintering temperature, and others will affect the product obtained (composition formed, and properties). Anyway,  have you tried  these both data of JCPDF 43-1154 and 43-1159 to match it.  Perhaps these articles will be useful (attached).

You should carry out XRD analysis of your new alloy with standard, determine space group of symmetry and structure of the alloy and write to ICSD. But, may be your alloy does consist of several phases as wrote previous specialist. In thin work crystal structure was determined under the pressure/ DOI: 10.1088/1742-6596/215/1/012013

I have designed a simulation program (.exe type) named 'Crystal hack' written in Visual Studio but for binary alloys of CCP-HCP system to identify hkl Miller indices, since I haven't get it from ICDD.  

We can decode based on d-spacing match. It can be downloaded from here:  

http://crystalhack.blogspot.com/

Since its an executable file you should allow antivirus to run it.

M kanagasabapathy 

http://crystalhack.blogspot.in/

If possible provide the corresponding 2 theta data, to identify the Miller indices for this ternary alloy.

M Kanagasabapathy 

Hi, Orozco-Hernández, it is better to show your pattern. I guess you may need to take the lattice parameter change into account when identify the peaks, especially for beta-bcc phase.

BTW, to simulate the the pattern, you can also use the free software PowderCell, http://www.ccp14.ac.uk/ccp/web-mirrors/powdcell/a_v/v_1/powder/e_cell.html