Compressibility of 304 Stainless Steel Powder Metallurgy Materials Reinforced with 304 Short Stainless Steel Fibers

Abstract

Powder metallurgy (P/M) technique is usually used for manufacturing porous metal materials. However, some P/M materials are limitedly used in engineering for their performance deficiency. A novel 304 stainless steel P/M material was produced by a solid-state sintering of 304 stainless steel powders and 304 short stainless steel fibers, which were alternately laid in layers according to mass ratio. In this paper, the compressive properties of the P/M materials were characterized by a series of uniaxial compression tests. The effects of fiber content, compaction pressure and high temperature nitriding on compressive properties were investigated. The results indicated that, without nitriding, the samples changed from cuboid to cydariform without damage in the process of compression. The compressive stress was enhanced with increasing fiber content ranging from 0 to 8 wt.%. For compaction pressure from 55 to 75 MPa, greater compaction pressure improved compressive stress. Moreover, high temperature nitriding was able to significantly improve the yield stress, but collapse failure eventually occurred.

Toz Metalurjisi Metoduyla Üretilen Distaloy AE Alaşımlarının Isı Akışı Davranışları

“…Via heat treatment; increasing of atomic vibration causes to diffusion and more atoms acts in the contact area and hence, bonding surface happens. Occurred bonding surface extends, therefore, sintering necks occurs [17,18]. this situation observed that surface of Distaloy AE alloy prepared on the 600 MPa pressure has smoother appearance than that of other alloy sample and recommended that this situation has a role on the higher heat flows of this samples according to the other samples.…”

Sintering of Iron Powder Mixtures and Determining their Mechanical Properties

“…Dies are made of cemented carbide, pressed using hydraulic or mechanical presses. The segment delivered after compaction is called green compact [5]. The measure of a die is 50mm stature with the 10mm width.…”

Charpy Impact Behavior of a Novel Stainless Steel Powder Wire Mesh Composite Porous Plate

“…In addition, the increase of sintering temperature was able to significantly enhance the tensile strength of the material. Bibo Yao et al [ 25 ] prepared a new type of 304 stainless steel powders metallurgy material with 304 stainless steel powders and 304 stainless steel short fibers as raw materials by pressing and vacuum solid-state sintering. The effects of fiber volume fraction, pressing force, and high-temperature nitriding on the compressive properties of the material were studied.…”