Two new low alloyed steels have been developed with different fracture toughness values but at similar level of hardness with same composition and microstructural phase. The steels were subjected to impact-abrasion wear test. This work examines specifically the additional role of toughness during impact-abrasion wear, using a newly developed high toughness steel. Microstructural characterisation of the damaged samples revealed that better toughness helps resist both impact and abrasion damage.

Bags of granite used for wear testing |

Bags of granite used for wear testing |

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Apparao's samples |

Dry pot wear tester |

Pin-on-disc tester |

Jaw crusher |

Jaw crusher |

Pin-on-disc machine |

Granite for impeller-tumbler test, before and after completing the test. |

Iron balls for impact wear tests |

Granite for impeller-tumbler test, before and after completing the test. |

Tumbler of impeller-tumbler test machine |

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impeller-tumbler test machine |

impeller-tumbler test machine |

Dry pot test machine |

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Dry sand, three-body abrasion test |

Dry sand, three-body abrasion test |

Dry sand, three-body abrasion test |

Erosion tester |

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Hammer mill type impact wear testing device |

Hammer mill type impact wear testing device |

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High velocity particle impactor |

High velocity particle impactor |

High strain-rate tensile tester |

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 sample for high strain-rate tensile test
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High strain-rate compression tester |

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Testing drop-resistance of mobile telephones |

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Professor Veli-Tapani Kuokkala |

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impeller-tumbler test with mounted samples from Apparao |

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Three dimensionally printed chocolates |

Three dimensionally printed chocolates |

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Professor Veli-Tapani Kuokkala, Kati Valtonen and Apparao, at Lapland Hotel |

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