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Wear of polycrystalline boron nitride tool during the friction stir welding of steel

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Figure

Fig. 1 (a) An SEM image of themicrostructure of a cross sectionthrough a PCBN Q70 (70%cBN, 30%WRe) [6] FSW tool,(b) PCBN tool image
Table 4 Chemical composition of as-received EH46 steel grade (wt.%)
Fig. 3 SEM image of the top of SZ of DH36 W2D shows theexistence of BN
Fig. 4 XRD scan of FSW of DH36 steel (a) W1D (200RPM, 100 mm/min) microstructure consists of BCC ferrite after the FSW process
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