force:navigateToRelatedList

To navigate to a related list, set the parent record ID on the parentRecordId attribute and fire the event. For example, to display a related list for a Contact object, the parentRecordId is Contact.Id. This example displays the related cases for a contact record.

1gotoRelatedList : function (component, event, helper) {
2    var relatedListEvent = $A.get("e.force:navigateToRelatedList");
3    relatedListEvent.setParams({
4        "relatedListId": "Cases",
5        "parentRecordId": component.get("v.contact.Id")
6    });
7    relatedListEvent.fire();
8}