Acta Metallurgica Sinica (English Letters) ›› 2014, Vol. 27 ›› Issue (5): 951-956.DOI: 10.1007/s40195-014-0158-8
• Orginal Article • Previous Articles Next Articles
Qiu Feng, Han Yue, Cheng Ai, Lu Jianbang, Jiang Qichuan()
Received:
2014-04-18
Revised:
2014-07-24
Online:
2014-10-09
Published:
2014-11-13
Qiu Feng, Han Yue, Cheng Ai, Lu Jianbang, Jiang Qichuan. Effect of Cr Content on the Compression Properties and Abrasive Wear Behavior of the High-Volume Fraction (TiC-TiB2)/Cu Composites[J]. Acta Metallurgica Sinica (English Letters), 2014, 27(5): 951-956.
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Cr content (wt%) | σ 0.2 (MPa) | σ UCS (MPa) | ε f (%) | Hardness (HV) |
---|---|---|---|---|
0 | \( 1 0 0 3_{ - 4 6}^{ + 3 3} \) | \( 1 2 5 2_{ - 5 4}^{ + 3 0} \) | \( 5. 8_{ - 0. 2}^{ + 0. 3} \) | 404 ± 8 |
3 | \( 1 1 1 3_{ - 4 3}^{ + 2 9} \) | \( 1 1 6 1_{ - 4 8}^{ + 3 5} \) | \( 2. 7_{ - 0. 3}^{ + 0. 2} \) | 436 ± 8 |
5 | \( 1 3 1 5_{ - 5 5}^{ + 4 6} \) | \( 1 3 5 8_{ - 4 5}^{ + 5 1} \) | \( 2. 3_{ - 0. 1}^{ + 0. 2} \) | 491 ± 10 |
7 | - | \( 1 8 2 7_{ - 5 2}^{ + 6 3} \) | \( 1. 9_{ - 0. 2}^{ + 0. 1} \) | 543 ± 10 |
Table 1 Room-temperature compression properties and microhardness of 50 vol% (TiC-TiB2)/Cu composites with different Cr contents
Cr content (wt%) | σ 0.2 (MPa) | σ UCS (MPa) | ε f (%) | Hardness (HV) |
---|---|---|---|---|
0 | \( 1 0 0 3_{ - 4 6}^{ + 3 3} \) | \( 1 2 5 2_{ - 5 4}^{ + 3 0} \) | \( 5. 8_{ - 0. 2}^{ + 0. 3} \) | 404 ± 8 |
3 | \( 1 1 1 3_{ - 4 3}^{ + 2 9} \) | \( 1 1 6 1_{ - 4 8}^{ + 3 5} \) | \( 2. 7_{ - 0. 3}^{ + 0. 2} \) | 436 ± 8 |
5 | \( 1 3 1 5_{ - 5 5}^{ + 4 6} \) | \( 1 3 5 8_{ - 4 5}^{ + 5 1} \) | \( 2. 3_{ - 0. 1}^{ + 0. 2} \) | 491 ± 10 |
7 | - | \( 1 8 2 7_{ - 5 2}^{ + 6 3} \) | \( 1. 9_{ - 0. 2}^{ + 0. 1} \) | 543 ± 10 |
Fig. 4 SEM images of the compression fractured surfaces for 50 vol% (TiC-TiB2)/Cu composites with different Cr contents: a 0 wt%; b 3 wt%; c 5 wt%; d 7 wt%
Fig. 5 Wear rate versus applied load under the counterface of 45 μm Al2O3 abrasive particles for the pure copper and the (TiC-TiB2)/Cu composites with different Cr contents
Fig. 6 Worn surfaces of the pure copper a, 50 vol% (TiC-TiB2)/Cu composites without Cr addition b, with 3 wt% Cr c, 5 wt% Cr d, 7 wt% Cr e, f additions. The applied load is 15 N for a-e, and the applied load is 35 N for f
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