{"id":12351,"date":"2025-10-27T20:14:41","date_gmt":"2025-10-27T20:14:41","guid":{"rendered":"https:\/\/www.jstconsultancy.cz\/?p=10144"},"modified":"2026-07-31T22:20:38","modified_gmt":"2026-07-31T22:20:38","slug":"portable-x-ray-analyzer-of-internal-stresses-and-residual-austenite","status":"publish","type":"post","link":"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/en\/portable-x-ray-analyzer-of-internal-stresses-and-residual-austenite\/","title":{"rendered":"Portable X-ray Analyzer of Internal Stresses and Residual Austenite"},"content":{"rendered":"

Once in the 1980s, I worked with ing. M. \u010cerm\u00e1k from SV\u00daM Prague and ing. Jirka Sika\u010d from SV\u00daOM Prague on the development of thin films of TiN. Mr. Ing. \u010cerm\u00e1k did all the X-ray analyses for us both for plasma nitriding and later for deposition processes. And not only the phase composition, but above all the tension in the layers. At that time, it was Jirka Sika\u010d in the neighboring house who helped develop a method to accurately measure the stress in the TiN layer. An X-ray was made on the sample with a layer, which was then separated in hydrogen peroxide. Since the layer\/substrate interface was preferentially etched, TiN powder remained, which represented zero residual stress. The spectral lines were compared and the stress was then calculated from the line shift.<\/p>\n

Since then, I have known that the macroscopic stress in the steel surface can be determined from the displacement of the diffraction lines, and the microscopic stress can be determined from the expansion of the diffraction lines. However, it is also possible to reliably determine residual austenite from X-ray analysis.<\/p>\n

However, my ideas were always connected with the device that we still had in VVZ Liberec ZEZ Praha, in Chrastavsk\u00e1 Street. It was certainly non-transferable.<\/p>\n

Recently, however, I have received a lot of assignments on the topic of internal stresses in the steel surface, both during thermal fatigue and during welding or after 3D printing. And so I was looking for help with it or what to recommend.<\/p>\n

I discovered a device from Pulstec Industrial Co.,\u00a0 Ltd. from Japan, which really excited me. It weighs 3 kg, is portable, and can do X-ray analysis anywhere because it runs on batteries. Thus, it can be used both in the laboratory and in operation. Its trade name is \u03bc-X360. Measurement time? 40 seconds.<\/p>\n

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A presentation of the method and the device can be found in this video here:<\/p>\n