How can I eliminate elephant foot structure in cold isostatic pressing?

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Will reduction in grain size within hallpetch range can increase toughness and strength in all metallic alloys?

or reduction in grain size increases toughness and strength only in steels?

12 August 2015 7,626 2 View

How to understand this crystallographic phenomenon of low temperature crystals in zeolite?

During low-temperature testing, new diffraction peaks that appear could be indicative of several phenomena. In one of our tests, we observed notable new peaks around 40° and 45° in a specific...

06 August 2024 726 3 View

Why Powder XRD is performed after cruhsing a crystal if Single Crystal XRD analysis of the same crystal has been performed already ?

What information we can get from PXRD analysis other than from SCXRD analysis of a crystal ?

30 July 2024 6,261 4 View

Is there a good macro photography kit for on-site metallurgical investigation?

I am looking to purchase a photography kit for onsite metallurgical investigations, such as capturing photos of worn areas, hot tears, cold tears etc. Could anyone suggest me a good...

22 July 2024 3,490 2 View

What could be the possible reason that sintering of polycrystalline diamond fabricated with tape casting has suddenly started failing?

I make polycrystalline diamond with tape casting followed by HPHT sintering. When i sintered the samples up till May, the sintering was good. When i sintered the samples in June and July at the...

16 July 2024 3,212 5 View

What binders suggestion that I can use for zinc alloy?

I am working on powder metallurgy, and during the compaction process, the powder does not pelletize and remains in its powder form. To address this issue, I am considering using binders to improve...

13 July 2024 9,003 2 View

What may cause whitish discolor of polycrystalline diamond surface, and cracks near edge?

I am preparing polycrystalline diamond (PCD) with tape casting. The powder is 8~12 um. After drying of tapes, I place several tapes in Ta cup without warm-pressing. Next, debinding is carried...

23 June 2024 7,758 2 View

How do we interpret the origin statement ?

Crystallography Doubt_International Table of Crystallography In the space-group number 185 of ITA (see Attachment), how do we interpret the origin statement?

08 May 2024 10,055 0 View

The Powder XRD pattern of a dinuclear metal complex does not match with the simulated single-crystal XRD pattern. What can be the reasons?

04 April 2024 3,901 4 View

Where can I find JCPDS XRD data of natural fiber ?

Is there a single JCPDS card for natural fiber ? My understanding is that all natural fibers basically have the same constituents albeit they are in different concentration. Cellulose,...

27 March 2024 5,032 1 View

Why stainless steel is not attractive to magnetic feild?

In material science, steel have more group, So what is the best explain answer according in metallurgy science?

21 March 2024 835 4 View

J. M. Sanchez

By using a softer cap or stopper and by increasing your filling density

Erik Carton

Increase the starting density of your powder mixture (e.g. by axial pre-compression)

Serge V. Shil’ko

Decreasing of interparticle friction may produce a good effect for the increasing density and obtaining of more uniform distribution of density. For example, try the application of ultrasonic vibrations on the pressform. Good luck!

Kamalashwaran Sivasubaramanian

thanks all