Mechanical and thermal properties of Zr-B and Fe-B alloys

Figures & data

Figure 1. Phase diagrams of Fe-B and Zr-B systems, sample compositions marked in lines [10,11].

Table 1. Sample compositions of the as-prepared Zr-B and Fe-B samples and ICP-MS results.

	Composition (at. %)
	As-prepared			ICP-MS
Samples	Zr	Fe	B	Zr	Fe	B
$\mathrm{Z}{\mathrm{r}}_{0.68}{\mathrm{B}}_{0.32}$	68	–	32	68.3	–	31.7
$\mathrm{Z}{\mathrm{r}}_{0.86}{\mathrm{B}}_{0.14}$	86	–	14	86.2	–	13.8
$\mathrm{F}{\mathrm{e}}_{0.37}{\mathrm{B}}_{0.63}$		37	63	–	36.3	63.7
$\mathrm{F}{\mathrm{e}}_{0.84}{\mathrm{B}}_{0.16}$	–	84	16	–	84.2	15.8

Figure 2. XRD patterns of (a) Zr-B and (b) Fe-B samples.

Figure 3. SEM images and element mappings of (a) Fe_0.84B_0.16 (b) Fe_0.37B_0.63 (c) Zr_0.86B_0.14.

Figure 4. SEM image and element mappings of Zr_0.68B_0.32.

Figure 5. Vickers hardness measurement indentations on (a)Zr_0.68B_0.32 (b)Zr_0.86B_0.14.

Figure 6. Vickers hardness measurement indentations on (a)Fe_0.84B_0.16 (b)Fe_0.37B_0.63.

Figure 7. The iso-strain Voigt model, iso-stress Reuss model, as well as what we expect under realistic situations.

Figure 8. Relationship between precipitate volume fraction and indentation hardness of (a) Zr-B (b) Fe-B alloys.

Table 2. Indentation hardness of Zr-B and Fe-B alloys.

	Indentation Hardness (GPa)
Zr0.86B0.14	2.02 ± 0.05
Fe0.37B0.63	18.3 ± 0.3
Fe0.84B0.16	4.60 ± 0.07

Figure 9. Relationship between boron composition and indentation hardness of (a) Zr-B (b) Fe-B alloys.

Figure 10. Relationship between temperature and thermal conductivity of (a) Zr-B (b) Fe-B alloys.

Figure 11. Composition dependence of thermal conductivity for Zr-B and Fe-B alloys at room temperature.

Table 3. Thermal conductivity of Fe-B and Zr-B at room temperature.

Fe-B	Fe [34]	Fe0.84B0.16	Fe2B [8]	FeB [7]	Fe0.37B0.63
Thermal conductivity (W/mK)	80.3	42.1	20.7	13.6	14.4
Zr-B	Zr [33]	Zr0.86B0.14	ZrB2 [9]
Thermal conductivity (W/mK)	20.9	21.6	129.0

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