H. Khalid Rafi

TL;DR: In this paper, the tensile and fatigue performance of selective laser melting (SLM)-built materials were compared with their respective standard wrought materials and fracture properties were analyzed and compared.

TL;DR: In this paper, the mechanical behavior and microstructural evolution of 17-4 precipitation hardenable (PH) stainless steel processed using selective laser melting have been studied, and the results show that post-process heat treatment is required to obtain typically desired tensile properties.

TL;DR: In this paper, the effects of process parameters on weld microstructure and tensile properties were discussed in detail based on microstructural observations, and the results showed that sound joints in AA7075-T6 can be achieved using friction welding, with a joint efficiency of 89% in as-welded condition with careful selection of process parameter.

TL;DR: In this article, the microstructural evolution during friction surfacing of H13 tool steel is discussed, and the current work shows that friction surfaced tool steel coatings are suitable for use in as-deposited condition.

TL;DR: In this article, a process parameter window was developed for satisfactory deposition of tool steel coatings, and the effects of process parameters on coating characteristics and integrity were evaluated, and it was shown that coating width is a strong function of mechtrode rotational speed, while coating thickness is mainly dependent on substrate traverse speed.