Effects of Mechanical Milling and Sintering Temperature on the Densification, Microstructure and Tensile Properties of the Fe–Mn–Si Powder Compacts

Xu, Zhigang; Hodgson, M.; Cao, Peng

doi:10.1016/j.jmst.2016.08.024

Cited by 24 publications

(23 citation statements)

References 31 publications

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“…It is noted that the green density of the ball milled Fe-Mn-Si compacts is ~ 65%, as determined in Ref. [15]. The density of the sintered alloys with no holding was ~ 5% higher than their green compacts.…”

Section: Densificationmentioning

confidence: 56%

“…The dimensions of the green compacts are 40 mm x 16 mm x 4.2 mm, and the green density of the ball milled Fe-Mn-Si compacts is ~ 65%, as determined in Ref. [15]. The green compacts were subsequently sintered in a high vacuum furnace with a vacuum level of 5 x 10 -3 Pa.…”

Section: Press and Sintermentioning

confidence: 99%

“…This makes Fe-Mn-Si shape memory alloys a promising candidate for various civil engineering applications such as pipe joints and rail coupling [6][7][8][9][10]. Recently, temporary biomedical devices such as cardiovascular stents and bone fixation plates have been discussed as potential applications of Fe-Mn-Si alloys due to their reasonable biodegradability, good biocompatibility and mechanical properties [11][12][13][14][15]. So far, Fe-Mn-Si SMA alloys are traditionally fabricated by melting and casting as it is favourable to obtain fully dense bulk materials with homogenized composition.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sintering Time on the Densification, Microstructure, Weight Loss and Tensile Properties of a Powder Metallurgical Fe-Mn-Si Alloy

Hodgson

Cao

2017

Preprint

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This work investigated the isothermal holding time dependence of the densification, microstructure, weight loss and tensile properties of Fe-Mn-Si powder compacts. Elemental Fe, Mn and Si powder mixtures with a nominal composition of Fe-28Mn-3Si (in weight percent) were ball milled for 5h and subsequently pressed under a uniaxial pressure of 400 MPa. The compacted Fe-Mn-Si powder mixtures were sintered at 1200 °C for 0, 1, 2 and 3 h, respectively. In general, the density, weight loss and tensile properties increased with the increase of isothermal holding time. A significant increase in density, weight loss and tensile properties occurred in the compacts being isothermally held for 1 h, as compared to those with no isothermal holding. However, further extension of isothermal holding time (2 and 3h) only played a limited role in promoting the sintered density and tensile properties. The weight loss of the sintered compacts was mainly caused by the sublimation of Mn in Mn depletion region on the surface layer of the sintered Fe-Mn-Si compacts. The length of the Mn depletion region increased with the isothermal holding time. A single α-Fe phase was detected on the surface of all the sintered compacts, and the locations beyond the Mn depletion region were comprised of a dual dominant γ-austenite and minor ε-martensite.

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Section: Densificationmentioning

confidence: 56%

Section: Press and Sintermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Sintering Time on the Densification, Microstructure, Weight Loss and Tensile Properties of a Powder Metallurgical Fe-Mn-Si Alloy

Hodgson

Cao

2017

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The dimensions of the green compacts were 40 mm × 16 mm × 4.2 mm, and the green density of the ball milled Fe-Mn-Si compacts was~65%, as determined in reference [15]. The green compacts were subsequently sintered in a high vacuum furnace with a vacuum level of 5 × 10 −3 Pa.…”

Section: Press and Sintermentioning

confidence: 99%

“…This makes Fe-Mn-Si shape memory alloys promising candidates for various civil engineering applications such as pipe joints and rail couplings [6][7][8][9][10]. Recently, temporary biomedical devices such as cardiovascular stents and bone fixation plates have been discussed as potential applications of Fe-Mn-Si alloys due to their reasonable biodegradability, good biocompatibility, and mechanical properties [11][12][13][14][15]. So far, Fe-Mn-Si SMA alloys are traditionally fabricated by melting and casting as it is favourable to obtain fully dense bulk materials with homogenized composition.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sintering Time on the Densification, Microstructure, Weight Loss and Tensile Properties of a Powder Metallurgical Fe-Mn-Si Alloy

Hodgson

Chang

et al. 2017

Metals

Self Cite

View full text Add to dashboard Cite

This work investigated the isothermal holding time dependence of the densification, microstructure, weight loss, and tensile properties of Fe-Mn-Si powder compacts. Elemental Fe, Mn, and Si powder mixtures with a nominal composition of Fe-28Mn-3Si (in weight percent) were ball milled for 5 h and subsequently pressed under a uniaxial pressure of 400 MPa. The compacted Fe-Mn-Si powder mixtures were sintered at 1200 • C for 0, 1, 2, and 3 h, respectively. In general, the density, weight loss, and tensile properties increased with the increase of the isothermal holding time. A significant increase in density, weight loss, and tensile properties occurred in the compacts being isothermally held for 1 h, as compared to those with no isothermal holding. However, further extension of the isothermal holding time (2 and 3 h) only played a limited role in promoting the sintered density and tensile properties. The weight loss of the sintered compacts was mainly caused by the sublimation of Mn in the Mn depletion region on the surface layer of the sintered Fe-Mn-Si compacts. The length of the Mn depletion region increased with the isothermal holding time. A single α-Fe phase was detected on the surface of all of the sintered compacts, and the locations beyond the Mn depletion region were comprised of a dual dominant γ-austenite and minor ε-martensite.

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Production and Tensile Behavior of Novel Powder Wire Mesh Composite Porous Plates

Zhou

2021

Adv Eng Mater

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A new type of powder wire mesh composite porous plate (PWMCPP) is successfully fabricated by the composite rolling and solid‐state sintering of stainless steel powder and wire mesh. Tensile tests are carried out, and the microstructure and fracture morphology are observed. The results show that the tensile strength of the PWMCPP decrease first and then increase with increasing mesh volume fraction and mesh diameter and increase with increasing sintering temperature. It is found that when the mesh volume fraction exceeds 65% and the sintering temperature exceeds 1310 °C, the tensile properties of the PWMCPP show the phenomenon of secondary plastic deformation work hardening with a saddle shape change. The tensile strength increased from 433 to 593 MPa, with an increase ratio of 36.95%, and the elongation increased from 33.17% to 55.7%, with an increase ratio of 67.92%. Herein, not only a method for preparing a composite of stainless steel powder and mesh is offered but also a useful reference for improving the tensile properties of the PWMCPP and expanding the application range (especially in the field of porous bearing) of porous metal materials is provided.

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Effects of Mechanical Milling and Sintering Temperature on the Densification, Microstructure and Tensile Properties of the Fe–Mn–Si Powder Compacts

Cited by 24 publications

References 31 publications

Effect of Sintering Time on the Densification, Microstructure, Weight Loss and Tensile Properties of a Powder Metallurgical Fe-Mn-Si Alloy

Effect of Sintering Time on the Densification, Microstructure, Weight Loss and Tensile Properties of a Powder Metallurgical Fe-Mn-Si Alloy

Effect of Sintering Time on the Densification, Microstructure, Weight Loss and Tensile Properties of a Powder Metallurgical Fe-Mn-Si Alloy

Production and Tensile Behavior of Novel Powder Wire Mesh Composite Porous Plates

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