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Directed energy deposition (DED) is suitable for fabrication of large Inconel 718 components, however, large columnar dendrites and several laves phase impair the mechanical properties. In this work, the formation mechanism of heterostructure microstructure with coarse grain (CG) and fine grain (FG) alternating distribution was explored, and the evolution process of Laves phase during inter-layer hammering hybrid directed energy deposition (HDED) was revealed. The results show that the heterostructure microstructure composed of CG region and FG region with a ratio of 1:1 was obtained due to th...

SHAH ALAM - Kerajaan Selangor tidak dilibatkan secara langsung dan menyeluruh dalam pelaksanaan projek Loji Rawatan Air (LRA) Langat 2. Exco Infrastruktur dan Pertanian Selangor, Izham Hashim berkata, pengurusan projek berkenaan akan dilaksanakan sepenuhnya oleh Pengurusan Aset Air Berhad (PAAB) yang merupakan anak syarikat kepada Kementerian Kewangan Malaysia.

KUALA LUMPUR - Bekalan air di kesemua 861 kawasan di Selangor membabitkan tujuh wilayah di Lembah Klang yang mengalami gangguan sejak Selasa, pulih sepenuhnya pada jam 3 pagi...