Effect of Warm Compaction and Lubricant on Microstructure and Properties of Iron-Based Alloy

2021 ◽  
Author(s):  
Xiaobin Hu ◽  
Zili Liu ◽  
Xiqin Liu ◽  
Huanjian Xie ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Warm Compaction ◽  
Microstructure And Properties ◽  
Iron Based

scholarly journals Effects of rare-earth oxides on the microstructure and properties of Fe-based friction materials synthesized by in situ carbothermic reaction from vanadium-bearing titanomagnetite concentrates

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20687-20697
Author(s):  
Dajun Zhai ◽  
Yue Shui ◽  
Keqin Feng ◽  
Yanyan Zhang
Keyword(s):  
Rare Earth ◽  
Tribological Properties ◽  
Rare Earth Oxides ◽  
Frictional Material ◽  
Friction Materials ◽  
Microstructure And Properties ◽  
Iron Based

In this work, we prepared an iron-based frictional material from vanadium-bearing titanomagnetite concentrates by in situ carbothermic reaction with improved tribological properties.

Effect of electropulsing on the microstructure and properties of iron-based amorphous alloys

1989 ◽  
Vol 23 (3) ◽  
pp. 305-310 ◽  
Author(s):  
Z.H. Lai ◽  
H. Conrad ◽  
Y.S. Chao ◽  
S.Q. Wang ◽  
J. Sun
Keyword(s):  
Amorphous Alloys ◽  
Microstructure And Properties ◽  
Iron Based

Preparation of Warm Compacted NbC Reinforced Iron-Based Composite and Its Tribological Behavior

2007 ◽  
Vol 534-536 ◽  
pp. 913-916
Author(s):  
Zhi Yu Xiao ◽  
Tungwai Leo Ngai ◽  
Li Pin Wen ◽  
Yuan Yuan Li
Keyword(s):  
Tribological Behavior ◽  
Combustion Engine ◽  
Wear Behavior ◽  
Engine Oil ◽  
Bench Test ◽  
Mixed Powder ◽  
Severe Wear ◽  
Warm Compaction ◽  
Suitable Material ◽  
Iron Based

A 15 wt.% NbC particulate reinforced iron-based composite was prepared by using warm compaction PM technique. It possesses a high relative density of 98%, a tensile strength of 515 MPa, a hardness of HRC 58 and a remarkable tribological behavior. Warm compaction was used because it can provide compacts with high green density and also increase the formability of the mixed powder. Furthermore, it can provide green strength that is strong enough to handle compacts before sintering. Block on ring tribotester was employed to study the compact’s friction and wear behavior using GCr15 steel as counterpart. A load of 980 N was used. The friction coefficient was 0.085 when the number 20 engine oil as lubricant was used. The results showed that the sintered composite has excellent wear resistivity. This material was then applied in the valve-guide cup of a combustion engine and subject to 500 hour bench test. The cup showed good performance for this test and did not shown any severe wear on the working surface after the test was completed. Therefore, it is a suitable material for parts that are exposed to severe wear condition.

The effect of Ti addition on the microstructure and properties of high chromium iron-based coatings

2018 ◽  
Vol 765 ◽  
pp. 782-790 ◽  
Author(s):  
Yan Yin ◽  
Cunliang Pan ◽  
Ruihua Zhang ◽  
Chao Zhao ◽  
Yuebo Qu
Keyword(s):  
High Chromium ◽  
Microstructure And Properties ◽  
Iron Based ◽  
Ti Addition

Densification Mechanism of Warm Compaction for Iron-Based Powder Materials

2007 ◽  
Vol 534-536 ◽  
pp. 261-264
Author(s):  
Sheng Guan Qu ◽  
Yuan Yuan Li ◽  
Wei Xia ◽  
Wei Ping Chen
Keyword(s):  
Plastic Deformation ◽  
Powder Materials ◽  
Force Component ◽  
Compaction Process ◽  
Densification Mechanism ◽  
Warm Compaction ◽  
Different Temperatures ◽  
Iron Based ◽  
Compaction Processes ◽  
Insight Into

An apparatus measuring changes of various forces directly and continuously was developed by a way of direct touch between powders and transmitting force component, which can be used to study forces state of powders during warm compaction. Using the apparatus, warm compaction processes of iron-based powder materials containing different lubricants at different temperatures were studied. Results show that densification of the powder materials can be divided into four stages, in which powder movement changes from robustness to weakness, while its degree of plastic deformation changes from weakness to robustness. The proposed densification mechanism may provide an insight into understanding of warm compaction process.

Key parameters for low temperature warm compaction of high density iron-based P/M materials

2005 ◽  
Vol 12 (4) ◽  
pp. 359-365
Author(s):  
Shun-hua Cao ◽  
Xin-ping Lin ◽  
Jiong-yi Li ◽  
Zhan Xie ◽  
Zhi-yong Cai
Keyword(s):  
Low Temperature ◽  
High Density ◽  
Warm Compaction ◽  
Iron Based
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