Co-sedimentation is one of the most promising ways to fabricate large-scale functionally graded materials (FGMs) with continuous variations in composition and microstructure. A kind of W-Mo-Ti FGMs with density gradient, which can be applied in dynamic high-pressure technology, has been fabricated by co-sedimentation method. The composition and microstructures of the W-Mo-Ti FGMs were mainly analyzed by EPMA and X-ray Energy Dispersive Spectrometer (EDS), a series of factors affecting the microstructure and compositions were also discussed.

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According to characteristics of the marine environment corrosion, 980MPa steel were developed. After design rational chemical composition and production process, the full section hot-rolled corrosion-resistant sorbite rail steel were successfully developed. this kind of steel has fine grain size, high strength and perfect toughness. Dry-wet immersion test showed that lift of this rail is 70% longer than U75V.

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