Te whakahaere i te waikura intergranular o te kowiri tira, te waikura intergranular 304, te waikura 304 me te waikura i roto i te waikura intergranular o te kowiri tira i roto i te 10% pea, ka heke te piri o ngā kakano, i te aroaro o te ahotea, ka tino ngawari ki te pakaru, ka pakaru, ka huna, ka kore e kitea mai i tōna āhua. Ka puta mai anō hoki i ētahi atu take matua o te waikura. Ko te waikura intergranular o te kowiri tira austenitic i puta mai i te rawakore ko te nuinga o te take o ngā rohe kakano Cr, Cr me te c ngāwari te hanga matū, te ihirangi Cr.
1, te hanganga matū me te hanganga
(1) Te ihirangi C
Ko te pānga o te waikura intergranular o te maitai kore waikura austenitic te mea nui rawa atu. I tētahi taha, me tino whakahaere te ihirangi waro o te C, me te pupuri i te ihirangi waro i roto i te konganuku turanga me te tokotoko whakarewa i te 0.08%. Tāpirihia ngā huānga whakau o te Ti, Nb ki te konganuku turanga me te rauemi whakarewa, he kaha te hononga ki te waro c i mua i te herea ki te Cr, ka puta he matū pumau.
(2) hanganga ā-wāhanga rua
Ka nui ake te ātete o te hanganga ā-wāhanga rua ki te waikura intergranular i te hanganga ā-wāhanga rua. I tētahi taha, ka honoa ngā huānga hanga ferrite, pērā i te chromium, te silicon, te konumohe, te molybdenum, me te hanganga whakarewa ā-wāhanga rua, ki runga i te kaihoko hanga kua tīpakohia kei roto ko te ferrite.
2, hangarau whakarewa
(1) Ko te pāmahana i roto i te awhe pāmahana 450 ~ 850 ℃, inā koa i te 650 ° C, koinei te rohe pāmahana tino māmā ki te whakaputa i te waikura intergranular (e mōhiotia ana ko te pāmahana tairongo-rohe). Ko te whakarewa maitai kore waikura, ka taea te tango i ngā whakarewa i raro i te raima, i roto rānei i te whakamatao wai o muri o te whakarewa, kia tere ai te whakamatao, kia tere ake ai te wā i roto i te awhe pāmahana, he mahi whai hua hei whakapai ake i te ātete waikura o ngā hononga.
(2) Mā te whakanui ake i te kaha o te raina whakarewa, ka tere ake te waikura o te maitai kore waikura austenitic. I te wā o te tukanga whakarewa, me te iti o te au, te tere whakarewa teitei, te pewa poto, te tikanga whakarewa maha-haerenga, ka whakaitihia te wera. He iti te whakauru wera, mā te tere o te whakaoho i te pāmahana kia kore ai e waikura intergranular o te rohe e pāngia ana e te wera.
Wā tuku: Maehe-12-2018