Abstract To study the manufacturability and mechanical properties of a low alloy heat treatable medium carbon steel by additive manufacturing, 42CrMo4 (AISI4140) specimens were manufactured laser powder bed fusion. Influences processing parameters on relative density crack investigated. Moreover, Charpy impact tests, microhardness, tensile tests for with without preheating also studied. Results...

The surface and subsurface conditions of components are critical for their functional properties. Every manufacturing process modifies the condition as a consequence its mechanical, chemical, thermal impact or combinations three. depth affected zone varies different machining operations is related to parameters characteristics. Furthermore, initial material state has decisive influence on modif...

Günümüzde silah kullanımı bireysel veya kitlesel olarak artış göstermektedir. Bu artışa paralel endüstrisinde namlu üretim aşamasında önemli gelişmeler yaşanmaktadır. Yaşanan gelişmelerin sonucunda üretiminde kullanılan malzemeler ön plana çıkmaktadır. Namlu gerek fiziksel ve mekanik özellikleri gerekse de ulaşılabilirlikleri sebebiyle çelik tercih edilmektedir. Bununla birlikte malzemesi seçim...

A thermo-mechanical treatment (TMT) at the temperature of maximum dynamic strain aging has been optimized and performed on quenched tempered steel SAE4140H (German designation: 42CrMo4) in order to improve fatigue limit high cycle (HCF) very (VHCF) regimes. Fatigue tests, with ultimate numbers 107 109, have shown that TMT can increase both lifetime HCF VHCF The increased stress intensity factor...